Exhibit 10.4

HESKA CORPORATION 1997 STOCK INCENTIVE PLAN
STOCK OPTION AGREEMENT
(EMPLOYEES AND CONSULTANTS)

Tax Treatment
This option is intended to be an incentive stock option under section 422 of the
Internal Revenue Code or a nonstatutory option, as provided in the Notice of
Stock Option Grant.

Vesting/        This option will be cancelled and of no further force or effect
in the event that    
Exercisability
Heska Corporation’s stockholders fail to approve, at an annual or special
meeting called for the purpose, an increase in the total number of authorized
shares of the Company’s Public Common Stock to at least 8,500,000 shares on or
before December 31, 2022. Notwithstanding anything to the contrary in this or
any other section of this Stock Option Agreement or in the Notice of Stock
Option Grant, the option is not vested and shall not be exercisable unless and
until such stockholder approval is effective.

This option vests and becomes exercisable in installments, as shown in the
Notice of Stock Option Grant. In addition, this option shall vest and become
exercisable in full if one of the following events occurs:

•
Your service as an Employee, Consultant or Outside Director of the Company or a
Subsidiary terminates because of death, or

•
The Company is a party to a merger or other reorganization while you are an
Employee or Consultant of the Company or a Subsidiary, this option is not
continued by the Company and is not assumed by the surviving corporation or its
parent, and the surviving corporation or its parent does not substitute its own
option for this option, or

•
The Company is subject to a “Change in Control” while you are an Employee or
Consultant of the Company or a Subsidiary and, within 12 months after the Change
in Control, the surviving entity terminates your service without your consent
and without Cause, as defined below. If the surviving entity demotes you to a
lower position, materially reduces your authority or responsibilities,
materially reduces your total compensation or announces its intention to
relocate your principal place of work by more than 20 miles, then that action
will be treated as a termination of your service.

•
“Cause” shall mean (i) your failure to perform your assigned duties or
responsibilities as an Employee or Consultant of the Company or a Subsidiary
(other than a failure resulting from total and permanent disability, as
discussed below) after notice thereof from the Company describing your failure
to perform such duties or responsibilities; (ii) your material breach of any
confidentiality agreement or invention assignment agreement between you and the
Company or a Subsidiary; (iii) your engaging in any act of dishonesty, fraud,
misrepresentation, moral turpitude or misappropriation of material property that
was or is materially injurious to the Company or its affiliates; (iv) your
violation of any federal or state law or regulation applicable to the Company’s
business; or (v) your being convicted of, or entering a plea of nolo contendere
to, any crime.

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No additional shares become vested after your service as an Employee, Consultant
or Outside Director of the Company or a Subsidiary has terminated for any reason
other than those outlined herein.

Term
This option expires in any event at the close of business at Company
headquarters on the day before the 10th anniversary of the Date of Grant, as
shown in the Notice of Stock Option Grant. (It will expire earlier if your
service terminates, as described below.)

Regular Termination
If your service as an Employee, Consultant or Outside Director of the Company or
a Subsidiary terminates for any reason except death or total and permanent
disability, then this option will expire at the close of business at Company
headquarters on the date three months after your termination date. The Company
determines when your service terminates for this purpose.

Death
If your service as an Employee, Consultant or Outside Director of the Company or
a Subsidiary terminates because of your death, then this option will expire at
the close of business at Company headquarters on the date 12 months after the
date of death.

Disability
If your service as an Employee, Consultant or Outside Director of the Company or
a Subsidiary terminates because of your total and permanent disability, then
this option will expire at the close of business at Company headquarters on the
date 12 months after your termination date.

For all purposes under this Agreement, “total and permanent disability” means
that you are unable to engage in any substantial gainful activity by reason of
any medically determinable physical or mental impairment which can be expected
to result in death or which has lasted, or can be expected to last, for a
continuous period of not less than one year.

Leaves of Absence
Vesting of this option shall be suspended during any unpaid leave of absence
unless continued vesting is required by the terms of the leave or by applicable
law.

For purposes of this option, your service does not terminate when you go on a
military leave, a sick leave or another bona fide leave of absence, if the
Company approved your leave in writing and if continued crediting of service is
required by the terms of the leave or by applicable law.

For purposes of incentive stock options, no such leave may exceed 90 days,
unless reemployment upon expiration of such leave is guaranteed by the terms of
the leave or by applicable law. If reemployment upon expiration of a leave of
absence approved by the Company is not so guaranteed, then three months
following the 91st day of such leave, an incentive stock option shall cease to
be treated as an incentive stock option and shall be treated for tax purposes as
a nonstatutory option.

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Unless you immediately return to active work when the approved leave ends, your
service will terminate.

Restrictions on
The Company will not permit you to exercise this option if the issuance of
shares at that

Exercise
time would violate any law or regulation.

Notice of
When you wish to exercise this option, you must notify the Company by filing the
proper

Exercise
“Notice of Exercise” form at the address given on the form. Your notice must
specify how many shares you wish to purchase. The exercise will be effective
when the Company receives the Notice of Exercise with the option exercise
payment described herein.

If someone else wants to exercise this option after your death, that person must
prove to the Company’s satisfaction that he or she is entitled to do so.

Form of
When you submit your notice of exercise, you must include payment of the option
exercise

Payment
price for the shares you are purchasing. Payment may be made in one (or a
combination of two or more) of the following forms:

•
Your personal check, a cashier’s check or a money order.

•
Certificates for shares of Company stock that you own, along with any forms
needed to affect a transfer of those shares to the Company. The value of the
shares, determined as of the effective date of the option exercise, will be
applied to the option exercise price. However, you may not surrender shares of
Company stock in payment of the exercise price if your action would cause the
Company to recognize compensation expense (or additional compensation expense)
with respect to this option for financial reporting purposes.

•
Irrevocable directions to a securities broker approved by the Company to sell
all or part of your option shares and to deliver to the Company proceeds from
the sale in an amount sufficient to pay the option exercise price and any
withholding taxes. (The balance of the sale proceeds, if any, will be delivered
to you.) The directions must be given by signing a special “Notice of Exercise”
form provided by the Company.

Withholding
You will not be allowed to exercise this option unless you make arrangements
acceptable

Taxes and Stock
to the Company to pay any withholding taxes that may be due as a result of the
option

Withholding
exercise. These arrangements may include (with the Company's approval)
withholding

shares of Company stock that otherwise would be issued to you when you exercise
this option. The value of these shares, determined as of the effective date of
the option exercise, will be applied to the withholding taxes.

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Restrictions on
By signing this Agreement, you agree not to sell any option shares at a time
when

Resale
applicable laws, Company policies or an agreement between the Company and its
underwriters prohibit a sale. This restriction will apply as long as you are an
Employee, Consultant or Outside Director of the Company or a Subsidiary.

Transfer of
Prior to your death, only you may exercise this option. You cannot transfer or
assign

Option
this option. For instance, you may not sell this option or use it as security
for a loan. You may, however, dispose of this option in your will, by the laws
of descent and distribution or through a beneficiary designation.

Regardless of any marital property settlement agreement, the Company is not
obligated to honor a notice of exercise from your former spouse, nor is the
Company obligated to recognize your former spouse’s interest in your option in
any other way.

Retention Rights
Neither your option nor this Agreement gives you the right to be employed or
otherwise retained by the Company or a Subsidiary in any capacity. The Company
or a Subsidiary reserves the right to terminate your service at any time, with
or without cause.

Stockholder
You, or your estate or heirs, have no rights as a stockholder of the Company
until you

Rights
have exercised this option by giving the required notice to the Company and
paying the exercise price.

Applicable Law
This Agreement will be interpreted and enforced under the laws of the State of
Colorado (without giving effect to its conflict of laws provisions).

The Plan and
The 1997 Stock Incentive Plan is incorporated in this Agreement by reference.
Unless

Other
otherwise defined herein, all capitalized terms herein have the same defined
meanings

Agreements
as in the 1997 Stock Incentive Plan.

This Agreement and the Plan constitute the entire understanding between you and
the Company regarding this option. Any prior agreements, commitments or
negotiations concerning this option are superseded. This Agreement may be
amended only by another written agreement, signed by both parties.

BY SIGNING THE NOTICE OF STOCK OPTION GRANT OF THIS AGREEMENT, YOU AGREE TO ALL
OF THE TERMS AND CONDITIONS DESCRIBED ABOVE AND IN THE 1997 STOCK INCENTIVE
PLAN.