1 EXHIBIT 23.1 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation of our report included in this Annual Report on Form 10-K, into Heska Corporation's previously filed Registration Statement File No. 333-47129, Registration Statement File No. 333-30951, Registration Statement File No. 333-34111 and Registration Statement File No. 333-72155. /S/ ARTHUR ANDERSEN LLP Denver, Colorado March 23, 2000