HESKA CORP
EXHIBIT 10.17
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<TYPE>EX-10.17
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<DESCRIPTION>EXHIBIT 10.17
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<P ALIGN="RIGHT"><FONT SIZE=2><B>Exhibit&nbsp;10.17  </B></FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><A
NAME="kq1498_lease_extension_agreement_#1"> </A>
<A NAME="toc_kq1498_1"> </A>
<BR></FONT><FONT SIZE=2><B><I>LEASE EXTENSION AGREEMENT #1    <BR>    </I></B></FONT></P>

<P ALIGN="CENTER"><FONT SIZE=2><I>(Three Prospect&#151;1613 Prospect Parkway)  </I></FONT></P>

<P><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;THIS LEASE EXTENSION AGREEMENT is made and entered into this 20th day of </FONT><FONT SIZE=2><I>October</I></FONT><FONT SIZE=2> 2003. </FONT></P>

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<TD WIDTH="16%"><FONT SIZE=2><B><I>LANDLORD</I></B></FONT><FONT SIZE=2>:</FONT></TD>
<TD WIDTH="84%"><FONT SIZE=2>The Landlord is GB Ventures, LLP.</FONT></TD>
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<TD WIDTH="16%"><BR><FONT SIZE=2><B><I>TENANT</I></B></FONT><FONT SIZE=2>:</FONT></TD>
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The Tenant is Heska Corporation</FONT></TD>
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<TD WIDTH="24%"><BR><FONT SIZE=2><B><I>LEASE AGREEMENTS</I></B></FONT><FONT SIZE=2>:</FONT></TD>
<TD WIDTH="76%"><FONT SIZE=2><BR>
That certain Lease Agreement between Landlord and Tenant dated June&nbsp;27, 1996.</FONT></TD>
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<TD WIDTH="14%"><BR><FONT SIZE=2><B><I>PREMISES</I></B></FONT><FONT SIZE=2>:</FONT></TD>
<TD WIDTH="86%"><FONT SIZE=2><BR>
The Leased Premises consist of approximately 16,800 square feet at 1613 Prospect Parkway, Fort Collins, Colorado, in the project commonly known as Three Prospect.</FONT></TD>
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<TD WIDTH="33%" VALIGN="TOP"><BR><FONT SIZE=2><B><I>CURRENT LEASE EXPIRATION</I></B></FONT><FONT SIZE=2>:</FONT></TD>
<TD WIDTH="67%" VALIGN="TOP"><FONT SIZE=2><BR>
October&nbsp;1, 2004.</FONT></TD>
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<TD WIDTH="28%" VALIGN="TOP"><BR><FONT SIZE=2><B><I>NEW LEASE EXPIRATION</I></B></FONT><FONT SIZE=2>:</FONT></TD>
<TD WIDTH="72%" VALIGN="TOP"><FONT SIZE=2><BR>
May&nbsp;31, 2005.</FONT></TD>
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<TD COLSPAN=4><BR><FONT SIZE=2><B><I>EXTENSION PERIOD BASE MONTHLY RENTAL RATE</I></B></FONT><FONT SIZE=2>:</FONT></TD>
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&nbsp;</FONT></TD>
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The base monthly rental rate for the Lease Extension Period shall be as follows:</FONT></TD>
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&nbsp;</FONT></TD>
<TD WIDTH="36%"><FONT SIZE=2><BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;October&nbsp;1, 2004 to May&nbsp;31, 2005</FONT></TD>
<TD COLSPAN=2><FONT SIZE=2><BR>
$15,571.89/month NNN with a Consumer Price Index increase (3%min&nbsp;-&nbsp;6%max) on:<BR>
September&nbsp;1, 2004</FONT></TD>
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<TD WIDTH="23%"><BR><FONT SIZE=2><B><I>OPTION TO EXTEND</I></B></FONT><FONT SIZE=2>:</FONT></TD>
<TD WIDTH="77%"><FONT SIZE=2><BR>
Tenant shall have one (1)&nbsp;option to extend the term of this Lease for one (1)&nbsp;year at same rental rate plus a Consumer Price Index increase (3%min&nbsp;-&nbsp;6%max) on September&nbsp;1, 2005. Tenant shall give written notice to landlord no
later than May&nbsp;31, 2004.</FONT></TD>
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<TD WIDTH="23%"><BR><FONT SIZE=2><B><I>BROKERAGE FEE</I></B></FONT><FONT SIZE=2>:</FONT></TD>
<TD WIDTH="77%"><FONT SIZE=2><BR>
A brokerage fee shall be paid to Equis Corporation per separate agreement.</FONT></TD>
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<TD WIDTH="34%"><BR><FONT SIZE=2><B><I>OTHER TERMS&nbsp;&amp; CONDITIONS</I></B></FONT><FONT SIZE=2>:</FONT></TD>
<TD WIDTH="66%"><FONT SIZE=2><BR>
All other terms and conditions of that Lease Agreement between Landlord and Tenant dated June&nbsp;27, 1996, which have not been superseded by terms and conditions of this Lease Extension Agreement #1, shall remain the same.</FONT></TD>
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<TD WIDTH="21%"><BR><FONT SIZE=2><B><I>OFFER PERIOD</I></B></FONT><FONT SIZE=2>:</FONT></TD>
<TD WIDTH="79%"><FONT SIZE=2><BR>
This Lease Extension offer shall remain in effect through </FONT><FONT SIZE=2><B>October&nbsp;27th, 2003.</B></FONT></TD>
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<TD COLSPAN=2><BR><FONT SIZE=2><B><I>LANDLORD:</I></B></FONT></TD>
<TD WIDTH="5%"><FONT SIZE=2><B><I><BR>&nbsp;</I></B></FONT></TD>
<TD COLSPAN=2><FONT SIZE=2><B><I><BR>
TENANT:</I></B></FONT></TD>
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<TD COLSPAN=2><BR><FONT SIZE=2><B>GB VENTURES, LLP</B></FONT></TD>
<TD WIDTH="5%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD COLSPAN=2><BR><FONT SIZE=2><B>HESKA CORPORATION</B></FONT></TD>
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<TD COLSPAN=2><FONT SIZE=2><BR>
/s/&nbsp;&nbsp;</FONT><FONT SIZE=2>WILLIAM W. REYNOLDS</FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE></TD>
<TD WIDTH="5%"><FONT SIZE=2><BR>&nbsp;</FONT></TD>
<TD COLSPAN=2><FONT SIZE=2><BR>
/s/&nbsp;&nbsp;</FONT><FONT SIZE=2>JASON A. NAPOLITANO</FONT><FONT SIZE=2>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT><HR NOSHADE></TD>
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<TD WIDTH="5%"><FONT SIZE=2>By:</FONT></TD>
<TD WIDTH="43%"><FONT SIZE=2>WILLIAM W. REYNOLDS,<BR>
Managing Partner</FONT></TD>
<TD WIDTH="5%"><FONT SIZE=2>&nbsp;</FONT></TD>
<TD WIDTH="5%"><FONT SIZE=2>By:</FONT></TD>
<TD WIDTH="43%"><FONT SIZE=2>JASON A. NAPOLITANO<BR>
Executive Vice President and Chief Financial Officer</FONT></TD>
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