Exhibit 10.6

Amendment to Escrow Agreement dated December 16, 2010

Whereas an Escrow Agreement (the "Escrow Agreement") was entered into as of
October 26, 2010, by and between Herman H. Pettegrove (the "Escrow Agent"),
Entest BioMedical Inc. (“Purchaser”) and Greg McDonald, DVM (the “Seller”),
herein collectively referred to herein as the “Parties” (“Parties”).

Whereas the Escrow Agreement is amended as follows:

(a) Pet Pointers Inc., a corporation controlled by Seller, is added as a party
to the Escrow Agreement

(b) Entest Biomedical Inc., a California corporation, is added as a party to the
Escrow Agreement

(c) The term “Definitive Purchase Agreement” shall mean the Asset Purchase
Agreement made as of December 16,2010 by and among ENTEST BIOMEDICAL, INC. a
California corporation, PET POINTERS, INC., a California corporation and DR.
GREGORY MCDONALD

(d) Schedule A is amended to read and be as follows:

SCHEDULE A
ESCROW ASSETS

On or before October 29, 2010, Entest BioMedical, Inc. shall deliver to the
Escrow Agent the amount of $20,000 (“Initial Escrow Deposit”). The parties
acknowledge that this has occurred.

On or before December 30, 2010, Entest BioMedical, Inc. shall deliver to the
Escrow Agent the amount of $50,000 (“Additional Escrow Deposit”).

On or before January 10, 2010 , Entest BioMedical, Inc. shall deliver to the
Escrow Agent $210,000 worth of common shares based on closing price January 2,
2011 of Entest BioMedical, Inc., a Nevada corporation, (OTCBB:ENTB) issued in
the name of Gregory McDonald. (“Stock Deposit”)

(e) Schedule B is amended to be and read as follows:

(a) In the event that written acknowledgement is received by Escrow Agent from
the Buyer and Seller that all conditions of Article 6 of the Definitive Purchase
Agreement have been satisfied the Initial Escrow Deposit, the Additional Escrow
Deposit and the Stock Deposit shall be released to Gregory McDonald or Pet
Pointers, Inc. pursuant to the written instructions of Gregory McDonald

(b) In the event that written notice is received by Escrow Agent from Buyer that
all conditions of Article 6 of the Definitive Purchase Agreement have not been
satisfied the Initial Escrow Deposit, the Additional Escrow Deposit and the
Stock Deposit shall be released to Entest BioMedical, Inc.

 
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IN WITNESS WHEREOF, each Party has executed, or has caused a duly authorized
officer to execute, this Agreement as of the date first above written.

Entest BioMedical, Inc.(Nevada)
/s/ David R. Koos
Entest Biomedical, Inc.
David R. Koos, Chairman & CEO
(California)
     
Escrow Agent
/s/ Herman H. Pettegrove
 
Herman H. Pettegrove, Esq.
   
Gregory McDonald:
/s/ Greg McDonald
 
Greg McDonald, DVM
   
Pet Pointers, Inc.
/s/ Greg McDonald
 
Gregory McDonald , Chairman & CEO

 
 
 
 
 
 
 
 
 
 

 

 
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