<PAGE>
                                                                    EXHIBIT 10.3

                              AMENDED AND RESTATED
                              EMPLOYMENT AGREEMENT

         This Amended and Restated Employment Agreement (the "Amended
Agreement") is made and entered into as of the __ day of October, 2001, by and
between VCA Antech, Inc., a Delaware corporation (the "Company") and Tomas W.
Fuller, an individual ("Officer").

                                 R E C I T A L S

        A. Officer is currently employed as Chief Financial Officer, Vice
President and Assistant Secretary of the Company pursuant to an Employment
Agreement (the "Employment Agreement") between the Company and Officer dated as
of September 20, 2000.

        B. The Company and Officer desire to amend and restate the Employment
Agreement regarding the terms and conditions of Officer's employment by the
Company.

                                A G R E E M E N T

         NOW, THEREFORE, in consideration of the foregoing recitals and the
terms, covenants and conditions contained herein, the Company and Officer agree
as follows:

        1.       EMPLOYMENT.
                 ----------

         Company hereby employs Officer, and Officer hereby accepts such
employment, as Chief Financial, Vice President and Assistant Secretary of the
Company, on the terms and subject to the conditions set forth herein.

        2.       CAPACITY AND DUTIES.
                 -------------------

                2.1 Officer shall serve the Company as its Chief Financial
Officer, Vice President and Assistant Secretary and shall report directly to the
Chief Executive Officer of the Company (the "Board of Directors").

                2.2 Subject to the direction and control of the Chief Executive
Officer, Officer shall have the full authority and responsibility to operate and
manage, on a day to day basis, the business and affairs of the Company, and
shall perform such other duties and responsibilities as are prescribed by the
Bylaws of the Company and which are customarily vested in the office of chief
financial officer of a corporation.

                2.3 Officer shall devote his business time, energy and efforts
faithfully and diligently to promote the Company's interests.

                2.4 The terms of this Section 2 shall not prevent Officer from
investing or otherwise managing his assets in such form or manner as he chooses
and spending such time, whether or not during business hours, as he deems
necessary to manage his investments, so long as he is able to fulfill his duties
pursuant to Section 2 above.

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                2.5 Except for routine travel incident to the business of the
Company, Officer shall perform his duties and obligations under this Amended
Agreement principally from an office provided by the Company in Los Angeles,
California or the surrounding area.

        3.       TERM.
                 ----

         This Amended Agreement shall be effective as of the date hereof (the
"Effective Date") and shall govern Officer's employment from and after such
date. As of any given date, (the "Date of Determination"), Officer's employment
shall terminate on the second anniversary of the Date of Determination, unless
sooner terminated in accordance with the provisions of this Amended Agreement or
extended by an amendment executed by the Company and the Officer (the "Term").
Accordingly, there shall always for all purposes be a minimum of at least two
years remaining on the Term under this Amended Agreement.

        4.       COMPENSATION.
                 ------------

                4.1      Base Salary.
                         -----------

                        4.1.1 As compensation for services rendered under this
Amended Agreement, the Company shall pay to Officer a base salary (the "Base
Salary") computed in accordance with Section 4.1.2 below during the Term,
payable in accordance with the normal payroll procedures of the Company.

                        4.1.2 During the Term, Officer's Base Salary shall be
$205,200 and shall be adjusted as provided in this Section. Commencing on
January 1, 2002 and on each anniversary thereafter, or from time to time at the
sole discretion of the Compensation Committee of the Board of Directors (the
"Compensation Committee"), Officer's Base Salary shall be reviewed by the
Compensation Committee and may be increased, but may never be decreased, in the
sole discretion of the Compensation Committee. In determining whether to
increase Officer's Base Salary the Compensation Committee may engage a reputable
compensation consulting firm to determine comparable compensation packages
provided to executives in similarly situated companies.

                        4.1.3 The Company may deduct from the Base Salary
amounts sufficient to cover applicable federal, state and/or local income tax
withholdings and any other amounts which the Company is required to withhold by
applicable law.

                        4.2 Cash Bonus Plan. The Compensation Committee shall
                            ---------------
adopt a cash bonus plan designed to provide Officer an opportunity to earn
annual cash bonuses during each calendar year during his employment which, when
added to Officer's Base Salary, shall provide Officer a level of compensation
comparable to compensation generally prevailing for other senior officers of
publicly traded companies which are comparable to the Company. The factors to be
used to select which companies are comparable to that of the Company shall
include, but not be limited to, industry group, revenues, operating income,
growth rate, number of employees and location. The annual performance goals to
be met (the "Annual Performance Goal") in order to earn portions or all of the
bonus provided under the plan shall be determined through consultation between
the Officer and the Compensation Committee. If requested by the Compensation
Committee or Officer, the Company shall retain a reputable, nationally

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recognized compensation consultant to assist the Compensation Committee in
identifying comparable companies and to make recommendations regarding the
structure and amount of the cash bonus plan. The amount of the cash bonus for
any particular calendar year shall be determined as follows: (i) if Officer
substantially achieves the Annual Performance Goal for such calendar year,
Officer shall receive a cash bonus of at least 35% of the Officer's Base Salary
for such calendar year; and (ii) if Officer exceeds the Annual Performance Goal
for such calendar year, Officer shall receive a cash bonus between 35% and 70%
of the Officer's Base Salary for such calendar year. If this Amended Agreement
is terminated in the middle of a calendar year, Officer shall receive a cash
bonus for services rendered through the Termination Date (as defined below)
equal to the cash bonus he would have received for the entire calendar year, pro
rated through the Termination Date. All cash bonuses hereunder shall be paid to
Officer within five business days following the date the audited consolidated
financial statements for the Company for the applicable calendar year become
available.

                4.3 Stock Options. All options granted to Officer after the
                    -------------
Effective Date, whether pursuant to a Company Stock Option Plan or otherwise,
shall vest in 24 equal monthly installments commencing on the first day of each
month following the month in which such options are granted. All options to
purchase the Company's Common Stock currently outstanding or which may be
granted to Officer whether pursuant to a Company Stock Option Plan or otherwise
and notwithstanding the provisions of any other agreement to the contrary, may
be exercised by Officer or by Officer's family by delivery of a promissory note
in the amount of the total exercise price of the option (the "Exercise Price").
The promissory note shall bear interest at the then current thirty year U.S.
treasury bond rate, shall be nonrecourse except to the security referred to in
the following clause, shall be secured by the Common Stock of the Company so
purchased, and shall be payable in full (principal and interest) on the fourth
anniversary of the date of the purchase of the shares. Notwithstanding the
foregoing, Officer shall apply all proceeds from the sale of the shares so
purchased by delivery of a promissory note to the repayment of principal and
interest outstanding under the note until all principal and interest is paid in
full. The Company shall maintain an effective registration statement covering
the shares underlying the options granted to Officer whether pursuant to a
Company Stock Option Plan or otherwise.

                4.4      Benefits.
                         --------

                         4.4.1 Vacation. Officer shall be entitled to four weeks
                               --------
paid vacation for each calendar year during Officer's employment; provided,
however, that vacation shall only be taken at such times as not to interfere
with the necessary performance of Officer's duties and obligations under this
Amended Agreement.

                         4.4.2 Automobile. The Company shall provide Officer
                               ----------
with the use of a luxury automobile that is selected by Officer and approved by
the Compensation Committee, the cost (the "Automobile Cost") of which during the
first year of the Term shall not be less than the cost that the Company
currently provides for Officer's use of an automobile. Commencing January 1,
2002 and continuing annually thereafter, the Automobile Cost may, at Officer's
sole discretion, be increased 5% per annum. On the earlier of significant damage
or destruction or attaining two years of age, the Company shall replace such
automobile with a new automobile selected by Officer and approved by the
Compensation Committee. The Company shall pay all

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costs of insurance, repair, maintenance and operation of such automobile. At the
end of the two year period referred to herein (or termination of employment, if
earlier), Officer may, but is not obligated to, purchase the automobile for the
book value of the automobile on the Company's financial records.

                4.4.3 Other Benefits; Insurance. During the term of Officer's
                      -------------------------
employment under this Amended Agreement, if and to the extent eligible, Officer
shall be entitled to participate in all operative Officer benefit and welfare
plans of the Company then in effect ("Company Officer Benefit Plans"),
including, to the extent then in effect, group life, medical, disability and
other insurance plans, all on the same basis generally applicable to the
executives of the Company; provided, however, that nothing contained in this
Section 4.4.4 shall, in any manner whatsoever, directly or indirectly, require
or otherwise prohibit the Company from amending, modifying, curtailing,
discontinuing or otherwise terminating, any Company Officer Benefit Plan at any
time (whether during or after the Term) except that the Company will at all
times during the Term and any severance period referred to in Section 8 or 9
hereof maintain medical insurance (including Exec-U-Care Medical Reimbursement
Insurance or a substantially similar policy) covering Officer and his dependents
with benefits at least as favorable as those provided by the Company to its
executives as of the date of termination.

                4.4.4 Reimbursement. Officer shall be entitled to reimbursement
                      -------------
from the Company for the reasonable costs and expenses incurred in connection
with the performance of the duties and obligations provided for in this Amended
Agreement.

        5.       INDEMNIFICATION.
                 ---------------

         The Company and Officer are parties to an Indemnification Agreement,
pursuant to which, inter alia, the Company has agreed, on the terms and
conditions therein set forth, to indemnify Officer against certain claims
arising by reason of the fact that he is or was an officer or director of the
Company.

        6.       TRADE SECRETS.
                 -------------

         Officer will not at any time during the Term and for the three year
period thereafter, in any fashion, form, or manner, unless specifically
consented to in writing by the Company, either directly or indirectly use or
divulge, disclose or communicate to any person, firm or corporation, any
confidential information of any kind, nature or description concerning any
matters affecting or relating to the business of the Company, except in the
ordinary course of the Company's business. All equipment, notebooks, documents,
memoranda, report, files, samples, books, correspondence, lists, other written
and graphic records, and the like, affecting or relating to the business of the
Company, which Officer shall prepare, use, construct, observe, possess or
control, shall be and remain the Company's sole property. Officer's obligation
under the preceding sentence shall continue in effect after the end of Officer's
employment with the Company and the obligations shall be binding on Officer's
assigns, heirs, executors, administrators, and other legal representatives.

        7.       RETURN OF CORPORATE PROPERTY AND TRADE SECRETS.
                 ----------------------------------------------

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         Upon termination of this Amended Agreement for any reason, Officer, or
his estate in the event of his death, shall turn over to the Company all
correspondence, property, writings or documents then in his possession or
custody belonging to or relating to the affairs of the Company or any of its
subsidiaries or affiliates or comprising or relating to the Trade Secrets.

        8.       TERMINATION OF EMPLOYMENT.
                 -------------------------

                8.1      Termination in Case of Death.
                         ----------------------------

                         8.1.1 Officer's employment hereunder shall terminate
immediately upon the death of Officer.

                         8.1.2 Upon termination of Officer's employment pursuant
to this Section 8.1, the Company shall pay to Officer's estate, on the
Termination Date, a lump sum payment of an amount equal to (x) all accrued and
unpaid salary and other compensation payable to Officer by the Company and all
accrued and unused vacation and sick pay payable to Officer by the Company with
respect to services rendered by Officer to the Company through the Termination
Date, and (y) the amount Officer would have earned as Base Salary during the
remaining scheduled Term of the Amended Agreement (computed without regard to
the termination of the Amended Agreement pursuant to this Section 8.1). In
addition to the foregoing, and notwithstanding the provisions of any other
agreement to the contrary, (x) all options to purchase the Common Stock of the
Company which have been granted to Officer and which would have vested during
the 24 months following the Termination Date shall become immediately
exercisable on the Termination Date and, notwithstanding any other agreement to
the contrary, shall remain exercisable for the full term of each such option,
and (y) the Company shall continue to provide for the benefit of Officer's
family the medical benefits referred to in Section 4.4.4 hereof for the
remaining scheduled Term of the Amended Agreement (computed without regard to
the termination of the Amended Agreement pursuant to this Section 8.1).

                8.2      Termination in Case of Disability.
                         ---------------------------------

                         8.2.1 If Officer suffers a physical or mental
disability which results in Officer being unable to perform his duties hereunder
for a 26 consecutive week period, then the Board of Directors shall select a
qualified physician to examine Officer and review his physical and mental
capacity. If such physician determines in good faith that such physical or
mental disability renders Officer incapable of performing his duties hereunder
for a period of at least 26 consecutive weeks following the date of such
physician's written opinion, then Officer's employment shall terminate effective
26 weeks following the date of such physician's written opinion.

                         8.2.2 Upon termination of Officer's employment pursuant
to this Section 8.2, the Company shall pay to Officer, on the Termination Date,
a lump sum payment of an amount equal to (x) all accrued and unpaid salary and
other compensation payable to Officer by the Company and all accrued and unused
vacation and sick pay payable to Officer by the Company with respect to services
rendered by Officer to the Company through the Termination Date, and (y) the
amount Officer would have earned as Base Salary during the remaining scheduled
Term of the Amended Agreement (computed without regard to the termination of the

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Amended Agreement pursuant to this Section 8.2); provided however, such amount
shall be reduced by the amount of any payments to be paid to Officer under any
long-term disability insurance policy maintained by the Company for the benefit
of Officer pursuant to Section 4.4.4. In addition to the foregoing, and
notwithstanding the provisions of any other agreement to the contrary, (x) all
options to purchase the Common Stock of the Company which have been granted to
Officer and which would have vested during the 24 months following the
Termination Date shall become immediately exercisable on the Termination Date
and, notwithstanding any other agreement to the contrary, shall remain
exercisable for the full term of each such option, and (y) the Company shall
continue to provide to Officer all other benefits referred to in Sections 4.4.2,
4.4.3 and 4.4.4 hereof for the remaining scheduled Term of the Amended Agreement
(computed without regard to the termination of the Amended Agreement pursuant to
this Section 8.2).

                8.3      Termination by Officer for Cause.
                         --------------------------------

                         8.3.1 The employment of Officer hereunder shall
terminate immediately upon written notice delivered by Officer to the Company
upon the occurrence of any of the following events:

                         8.3.1.1 The willful breach of any of the material
obligations of the Company to Officer under this Amended Agreement following
written notice delivered to the Company and a reasonable cure period not to
exceed 30 days.

                         8.3.1.2 The Company's chief executive offices are moved
to a location outside of Los Angeles County, California; or

                         8.3.1.3 Officer fails to be reelected to, or is removed
from, the Board of Directors of the Company.

                         8.3.2 Upon termination of Officer's employment pursuant
to this Section 8.3, the Company shall pay to Officer, on the Termination Date,
a lump sum payment of an amount equal to (x) all accrued and unpaid salary and
other compensation payable to Officer by the Company and all accrued and unused
vacation and sick pay payable to Officer by the Company with respect to services
rendered by Officer to the Company through the Termination Date, (y) the amount
Officer would have earned as Base Salary during the remaining scheduled Term of
the Amended Agreement (computed without regard to the termination of the Amended
Agreement pursuant to this Section 8.3), plus an amount equal to two times (i)
in the event no previous bonus has been paid or is payable pursuant to this
Amended Agreement, 20% of Officer's Base Salary, or (ii) in the event at least
one bonus has been paid or is payable to Officer, the greater of (a) the last
annual bonus paid or payable to Officer pursuant to this Amended Agreement; and
(b) the average annual bonus based on all annual bonuses paid or payable to
Officer pursuant to this Amended Agreement. In addition to the foregoing, and
notwithstanding the provisions of any other agreement to the contrary, (x) all
options to purchase the Common Stock of the Company which have been granted to
Officer shall become immediately exercisable on the Termination Date and,
notwithstanding any other agreement to the contrary, shall remain exercisable
for the full term of each such option, and (y) the Company

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shall continue to provide to Officer all other benefits that would otherwise be
payable to Officer pursuant to Sections 4.4.2, 4.4.3 and 4.4.4 hereof for the
remaining scheduled Term of the Amended Agreement (computed without regard to
the termination of the Amended Agreement pursuant to this Section 8.3).

                8.4      Termination by Officer Without Cause.
                         ------------------------------------

                        8.4.1 This Amended Agreement shall terminate immediately
upon delivery to the Company of written notice of termination by Officer without
cause.
                        8.4.2 Upon termination of this Amended Agreement
pursuant to this Section 8.4, the Company shall pay to Officer, on the
Termination Date, a lump sum payment of an amount equal to all accrued and
unpaid salary and other compensation payable to Officer by the Company and all
accrued and unused vacation and sick pay payable to Officer by the Company with
respect to services rendered by Officer to the Company through the Termination
Date.

                8.5      Termination by the Company Without Cause.
                         ----------------------------------------

                        8.5.1 The employment of Officer shall terminate
immediately upon delivery to Officer of written notice of termination by the
Company, which shall be deemed to be "without cause" unless termination is
expressly stated to be pursuant to Sections 8.1 or 8.2.

                        8.5.2 Upon termination of this Officer's employment
pursuant to this Section 8.5, the Company shall pay to Officer, on the
Termination Date, a lump sum payment of an amount equal to (x) all accrued and
unpaid salary and other compensation payable to Officer by the Company and all
accrued and unused vacation and sick pay payable to Officer by the Company with
respect to services rendered by Officer to the Company through the Termination
Date, and (y) the amount Officer would have earned as Base Salary during the
remaining scheduled Term of the Amended Agreement (computed without regard to
the termination of the Amended Agreement pursuant to this Section 8.5), plus an
amount equal to two times (i) in the event no previous bonus has been paid or is
payable pursuant to this Amended Agreement, 20% of Officer's Base Salary, or
(ii) in the event at least one bonus has been paid or is payable to Officer, the
greater of (a) the last annual bonus paid or payable to Officer pursuant to this
Amended Agreement; and (b) the average annual bonus based on all annual bonuses
paid or payable to Officer pursuant to this Amended Agreement. In addition to
the foregoing, and notwithstanding the provisions of any other agreement to the
contrary, (x) all options to purchase the Common Stock of the Company which have
been granted to Officer and which would have vested during the 24 months
following the Termination Date shall become immediately exercisable on the
Termination Date and, notwithstanding any other agreement to the contrary, shall
remain exercisable for the full term of each such option, and (y) the Company
shall continue to provide to Officer all other benefits that would otherwise be
payable to Officer pursuant to Sections 4.4.2, 4.4.3 and 4.4.4 hereof for the
remaining scheduled Term of the Amended Agreement (computed without regard to
the termination of the Amended Agreement pursuant to this Section 8.5).

                8.6      Termination by the Company For Cause.
                         ------------------------------------

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           8.6.1  The employment of Officer hereunder shall terminate
immediately upon written notice delivered by the Company to the Officer of
termination for "cause" by reason of Officer's conviction (including any plea of
guilty or no contest) of (x) any felony involving the embezzlement, theft or
misappropriation of monies or other property, of the Company or otherwise, or
(y) any crime of moral turpitude.

           8.6.2  Upon termination of this Amended Agreement pursuant to this
Section 8.6, the Company shall pay to Officer, on the Termination Date, all
accrued and unpaid salary and other compensation payable to Officer by the
Company and all accrued and unused vacation and sick pay payable to Officer by
the Company with respect to services rendered by the Officer to the Company
through the Termination Date in a lump sum payment. The Company shall have no
further obligation to the Officer pursuant to this Amended Agreement.

      8.7  Termination Date. For purposes of this Section 8, the term,
           ----------------
"Termination Date" shall mean that date on which Officer's employment is
terminated pursuant to this Section 8.

  9. SEVERANCE PAYMENTS UPON CHANGE IN CONTROL.
     -----------------------------------------

     9.1 Severance Payment. Upon the occurrence of a Change in Control (as
         -----------------
defined in Section 9.5 below) of the Company, the employment of Officer
hereunder shall terminate and the Company, in lieu of any payment otherwise due
under Section 8 hereof, shall pay to Officer in cash, on the fifth day following
the date on which the Change of Control occurs (which for the purposes of this
Section 9 shall be the Termination Date), the following:

         9.1.1  All accrued and unpaid salary and other compensation payable to
Officer by the Company for services rendered by Officer to the Company through
the Termination Date;

         9.1.2  All accrued and unused vacation and sick pay payable to Officer
by the Company with respect to services rendered by Officer to the Company
through the Termination Date; and

         9.1.3  Severance pay in an amount equal to (x) the Base Salary Officer
would have earned during the remaining scheduled Term of the Amended Agreement
(computed without regard to the Change in Control described in this Section 9),
plus an amount equal to two times (y) (i) in the event no previous annual bonus
has been paid or is payable pursuant to this Amended Agreement, 20% of Officer's
Base Salary, or (ii) in the event at least one annual bonus has been paid or is
payable to Officer, the greater of (a) the last annual bonus paid or payable to
Officer pursuant to this Amended Agreement, or (b) the average annual bonus
based on all annual bonuses paid or payable to Officer pursuant to this Amended
Agreement.

         9.2  Continuation of Benefits. The Company shall continue for the
              ------------------------
remaining scheduled Term of the Amended Agreement (computed without regard to
the Change in Control described in this Section 9), to provide Officer with all
benefits that would have been payable to him pursuant to Sections 4.4.2, 4.4.3
and 4.4.4 hereof if Officer had been employed by the Company during such period.

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          9.3  Vesting of Options. In addition to the foregoing, and
               ------------------
notwithstanding the provisions of any other agreement to the contrary, upon the
occurrence of a Change in Control, all options to purchase Common Stock of the
Company which have been granted to Officer by the Company shall become
immediately exercisable on the Termination Date and, notwithstanding any other
agreement to the contrary, shall remain exercisable for the full term of each
such option.

          9.4  Provision of Services Following Change in Control. At the request
               -------------------------------------------------
of the Company, Officer shall continue to serve hereunder for a period of up to
180 days following the Termination Date. If the Company requests Officer to
perform such services, Officer shall be compensated from and after the
Termination Date for the period that Officer actually remains employed by the
Company at his then current Base Salary. Any such amounts payable to Officer
shall be in addition to and not in lieu of the amounts payable to Officer under
Section 9.1 above. Upon the later to occur of an occurrence of a Change of
Control or the termination of any period during which Officer continues to
provide services as aforesaid, Officer's employment hereunder shall terminate.

          9.5  Change in Control. For purposes of this Section 9, "Change in
               -----------------
Control" of the Company shall be deemed to have occurred if (a) there shall be
consummated (x) any consolidation or merger of the Company into or with another
Person as such term is used in Sections 13(d)(3) and 14(d)(2) of the Securities
and Exchange Act of 1934, as amended (the "Exchange Act"), in which the Company
is not the continuing or surviving corporation or pursuant to which shares of
the Company's common stock would be converted into cash, securities or other
property, other than a merger of the Company in which the holders of the
Company's common stock immediately prior to the merger have the same
proportionate ownership of common stock of the surviving corporation immediately
after the merger, or (y) any sale, lease or other transfer (in one transaction
or a series of related transactions) of all or a significant portion of the
assets of the Company (for purposes of this definition, the sale of the stock or
assets of two or more of the Company's existing subsidiaries shall be deemed to
be a sale of a significant portion of the Company's assets), or (b) the
shareholders of the Company approve any plan or proposal for the liquidation or
dissolution of the Company, or (c) any Person who is not now the owner of 10% or
more of the Company's outstanding equity securities shall become the beneficial
owner (within the meaning of Rule 13d-3 under the Exchange Act) of 20% or more
of the Company's outstanding equity securities, or (d) during any period of two
consecutive years, individuals who at the beginning of such period constitute
the entire board of directors shall cease for any reason to constitute a
majority thereof unless the election, or the nomination for election by the
Company's shareholders, of each new director was approved by a vote of at least
two-thirds of the directors then still in office who were directors in the
beginning of the period.

          The parties believe that the payments pursuant to Sections 8
and 9 hereof do not constitute "Excess Parachute Payments" under Section 280G of
the Internal Revenue Code of 1986, as amended (the "Code"). Notwithstanding such
belief, if any benefit under these sections constitutes an "Excess Parachute
Payment" the Company shall pay to Officer an additional amount ("Tax Payment")
such that (x) the excess of all Excess Parachute Payments (including payments
under this sentence) over the sum of excise tax thereon under Section 4999 of
the Code and income tax thereon under Subtitle A of the Code and under
applicable state law is equal to

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(y) the excess of all Excess Parachute Payments (excluding payments under this
sentence) over income tax thereon under Subtitle A of the Code and under
applicable state law. Such Tax Payment shall be paid to Officer concurrently
with the severance payment referred to in Section 9.1 above.

     10. NO MITIGATION.
         -------------

     The payments required to be paid to Officer by Company pursuant to Sections
8 and 9 shall not be reduced by or mitigated by amounts which Officer earns or
is capable of earning during any period following his Termination Date.

     11. INJUNCTIVE RELIEF.
         -----------------

         Officer hereby recognizes, acknowledges and agrees that in the event of
any breach by Officer of any of his covenants, agreements, duties or obligations
hereunder, the Company would suffer great and irreparable harm, injury and
damage, the Company would encounter extreme difficulty in attempting to prove
the actual amount of damages suffered by the Company as a result of such breach,
and the Company would not be reasonably or adequately compensated in damages in
any action at law. Officer therefore agrees that, in addition to any other
remedy the Company may have at law, in equity, by statute or otherwise, in the
event of any breach by Officer of any of the covenants, agreements, duties or
obligations hereunder, the Company or its subsidiaries shall be entitled to seek
and receive temporary, preliminary and permanent injunctive and other equitable
relief from any court of competent jurisdiction to enforce any of the rights of
the Company or its subsidiaries or any of the covenants, agreements, duties or
obligations of Officer hereunder, or otherwise to prevent the violation of any
of the terms or provisions hereof, all without the necessity of proving the
amount of any actual damage to the Company or its subsidiaries thereof resulting
therefrom; provided, however, that nothing contained in this Section 11. shall
be deemed or construed in any manner whatsoever as a waiver by the Company or
its subsidiaries of any of the rights which any of them may have against Officer
at law, in equity, by statute or otherwise arising out of, in connection with or
resulting from the breach by Officer of any of his covenants, agreements, duties
or obligations hereunder.

     12. MISCELLANEOUS.
         -------------

         12.1  Entire Agreement. This Amended Agreement contains the entire
               ----------------
understanding of the parties hereto relating to the subject matter hereof and
cannot be changed or terminated except in writing signed by both Officer and the
Company.

         12.2  Limited Liabilities. All liabilities incurred by Officer in his
               -------------------
capacity as an officer hereunder shall be incurred for the account of the
Company, and Officer shall not be personally liable therefor. Officer shall not
be liable to the Company, or any of its respective subsidiaries, affiliates,
employees, officers, directors, agents, representatives, successors, assigns,
stockholders, and their respective subsidiaries and affiliates, the Company
shall, and hereby agrees to, indemnify, defend and hold Officer harmless from
and against any and all damages and/or loss or liability (including, without
limitation, all costs of defense thereof), for any acts or omissions in the
performance of service under and within the scope of this Amended Agreement on
the part of Officer.

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         12.3  Notices. All notices, requests and other communications
               -------
(collectively, "Notices") given pursuant to this Amended Agreement shall be
in writing, and shall be delivered by facsimile transmission with a copy
delivered by personal service or by United States first class, registered or
certified mail (return receipt requested), postage prepaid, addressed to the
party at the address set forth below:

         If to the Company:        VCA Antech, Inc.
                                   12401 West Olympic Boulevard
                                   Los Angeles, CA 90064-1022
                                   Attention: Board of Directors
                                   Facsimile No.: (310) 571-6701

         If to Officer:            Tomas W. Fuller
                                   ______________________________________

                                   ______________________________________

     Any Notice shall be deemed duly given when received by the addressee
thereof, provided that any Notice sent by registered or certified mail shall be
deemed to have been duly given three days from date of deposit in the United
States mails, unless sooner received. Either party may from time to time change
its address for further Notices hereunder by giving notice to the other party in
the manner prescribed in this Section 12.3.

         12.4  Governing Law. This Amended Agreement has been made and entered
               -------------
into in the state of California and shall be construed in accordance with the
laws of the State of California without regard to the conflict of laws
principles thereof.

         12.5  Counterparts. This Amended Agreement may be executed in any
               ------------
number of counterparts, each of which shall be deemed to be an original, but all
of which together shall constitute one and the same instrument.

         12.6  Severable Provisions. The provisions of this Amended Agreement
               --------------------
are severable, and if any one or more provisions are determined to be judicially
unenforceable, in whole or in part, the remaining provisions shall nevertheless
be binding and enforceable.

         12.7  Successors and Assigns. This Amended Agreement and all
               ----------------------
obligations and benefits of Officer and the Company hereunder shall bind and
inure to the benefit of Officer and the Company, their respective affiliates,
and their respective successors and assigns.

         12.8  Amendments and Waivers. No amendment or waiver of any term or
               ----------------------
provision of this Amended Agreement shall be effective unless made in writing.
Any written amendment or waiver shall be effective only in the instance given
and then only with respect to the specific term or provision (or portion
thereof) of this Amended Agreement to which it expressly relates, and shall not
be deemed or construed to constitute a waiver of any other term or provision (or
portion thereof) waived in any other instance.

         12.9  Title and Headings. The titles and headings contained in this
               ------------------
Amended Agreement are included for convenience only and form no part of the
agreement between the parties.

                                       11

<PAGE>

         12.10  Survival. Notwithstanding anything to the contrary contained
                --------
herein, the provisions of Sections 6, 7, 8, 9, 10 and 11 shall survive the
termination of this Amended Agreement.

     IN WITNESS WHEREOF, this Amended Agreement has been executed as of the date
first set forth above.

                                  "THE COMPANY" VCA ANTECH, INC.


                                  By:
                                      ------------------------------------------
                                  Its:
                                       -----------------------------------------


ACCEPTED AND AGREED TO:




Tomas W. Fuller


                                       12