Heska Corporation Invites You to Join Its Second Quarter 2001 Earnings Conference Call on the Web Tuesday, July 31, 2001, at 11:00 a.m. ET —9 a.m. MT—

Business Wire, July 24, 2001

Business Editors

FORT COLLINS, Colo.--(BUSINESS WIRE)--July 24, 2001

In conjunction with Heska Corporation's (Nasdaq:HSKA), Second Quarter 2001 earnings release, you are invited to listen to its conference call that will be broadcast live over the Internet on Tuesday, July 31, 2001, at 11:00 a.m. Eastern Time (9 a.m. Mountain Time).

This call is being webcast by CCBN and can be accessed at Heska's web site at www.heska.com.

The webcast is also being distributed over CCBN's Investor Distribution Network to both institutional and individual investors. Individual investors can listen to the call through CCBN's individual investor center at www.companyboardroom.com or by visiting any of the investor sites in CCBN's Individual Investor Network such as America Online's Personal Finance Channel, Fidelity Investments(R) (Fidelity.com) and others. Institutional investors can access the call via CCBN's password-protected event management site, StreetEvents (www.streetevents.com). StreetEvents allows institutional investors to identify, organize, and track the hundreds of conference calls that occur each day during earnings season, to download events of interest to their Outlook calendar, and to RSVP to events online.

Heska discovers, develops, manufactures and markets companion animal health products, primarily for dogs, cats and horses. Heska has a sophisticated scientific effort devoted to applying biotechnology to the large and growing companion animal health market. Heska also offers diagnostic and patient monitoring instrumentation and supplies, as well as laboratory diagnostic products in the United States and Europe to veterinarians, and operates a USDA- and FDA-licensed facility, which manufactures vaccines and pharmaceutical products. For additional information on Heska and its products, visit the company's web site at www.heska.com.