Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Wisnewski Nancy
 2. Date of Event Requiring Statement (Month/Day/Year)
03/05/2007		 3. Issuer Name and Ticker or Trading Symbol
HESKA CORP [HSKA]
(Last)
(First)
(Middle)
4219 BEAVER CREEK DRIVE		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
VP, Prod.Dev.& Tech Cust. Serv
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

FORT COLLINS, CO 80526		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 54,742
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Incentive Stock Option (right to buy) 01/06/2003(1) 01/06/2013 Common Stock 15,000 $ 0.34 D  
Incentive Stock Option (right to buy) 03/30/2005(2) 03/30/2015 Common Stock 65,000 $ 0.88 D  
Incentive Stock Option (right to buy) 04/10/2003(3) 04/10/2013 Common Stock 20,000 $ 0.95 D  
Incentive Stock Option (right to buy) 02/05/2002(4) 02/05/2012 Common Stock 35,000 $ 1.06 D  
Incentive Stock Option (right to buy) 04/26/2001(5) 04/26/2011 Common Stock 10,000 $ 1.14 D  
Incentive Stock Option (right to buy) 11/22/2004(6) 11/22/2014 Common Stock 10,000 $ 1.16 D  
Incentive Stock Option (right to buy) 01/12/2002(7) 01/12/2012 Common Stock 10,000 $ 1.21 D  
Incentive Stock Option (right to buy) 12/15/2005(2) 12/15/2015 Common Stock 16,716 $ 1.25 D  
Incentive Stock Option (right to buy) 09/02/2003(8) 09/02/2013 Common Stock 10,000 $ 1.53 D  
Incentive Stock Option (right to buy) 05/18/2004(9) 05/18/2014 Common Stock 17,500 $ 1.59 D  
Incentive Stock Option (right to buy) 11/17/2006(2) 11/17/2016 Common Stock 58,241 $ 1.717 D  
Incentive Stock Option (right to buy) 11/17/1999(10) 11/17/2009 Common Stock 10,000 $ 2 D  
Incentive Stock Option (right to buy) 03/15/1997(11) 03/15/2007 Common Stock 4,792 $ 3 D  
Incentive Stock Option (right to buy) 04/06/1999(12) 04/06/2009 Common Stock 7,500 $ 3.06 D  
Non-Qualified Stock Option (right to buy) 12/15/2005(2) 12/15/2015 Common Stock 113,284 $ 1.25 D  
Non-Qualified Stock Option (right to buy) 11/17/2006(2) 11/17/2016 Common Stock 1,759 $ 1.717 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Wisnewski Nancy
4219 BEAVER CREEK DRIVE
FORT COLLINS, CO 80526		       VP, Prod.Dev.& Tech Cust. Serv  

Signatures

Nancy Wisnewski 03/09/2007
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) This option vested monthly in equal installments over one (1) year through January 6, 2004
(2) Option granted is immediately exercisable.
(3) This option originally vested monthly in equal installments over four (4) years through April 10, 2007. Vesting was accelerated to full vest on March 30, 2005
(4) This option vested monthly in equal installments over four (4) years through February 5, 2006. Vesting was accelerated to full vest on December 2, 2004
(5) This option vested monthly in equal installments over four years through April 26, 2005. Vesting was accelerated to full vest on December 2, 2004
(6) This option vested monthly in equal installments over four (4) years through November 22, 2008. Vesting was accelerated to full vest on December 2, 2004
(7) This option vests monthly in equal installments over four years through January 12, 2006.
(8) This option vested monthly in equal installments over four (4) years through September 2, 2007. Vesting was accelerated to full vest on December 2, 2004
(9) This option vests monthly in equal installments over four (4) years through January 5, 2008
(10) This option vested monthly in equal installments over four (4) years through November 17, 2003
(11) This option vested monthly in equal installments over four (4) years through March 15, 2001.
(12) This option vested monthly in equal installments over four (4) years through April 6, 2003.

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