Description: In October 2025, Columbia Veterinary Hospital in The Dalles, Oregon reportedly used Zoetis's Vetscan Imagyst AI to analyze a rapidly growing neck mass in an 11-year-old Belgian Tervuren. The system allegedly classified the mass as inflammatory, while a later biopsy found aggressive cancer. The hospital alleges the first surgery failed to remove all cancer, requiring a second operation; the dog died from complications. Zoetis allegedly later apologized and said similar incidents had occurred.
Editor Notes: Incident ID date is 10/01/2025, an approximation based on reporting that the incident occurred in October 2025. Lawsuit filed 07/30/2026. Incident ID created 08/08/2026.
Entities
View all entitiesAlleged: Zoetis and AI diagnostic system developers developed an AI system deployed by Veterinarians , Columbia Veterinary Hospital (The Dalles, Oregon) and AI diagnostic system deployers, which harmed Unnamed 11-year-old Belgian Tervuren , Pets , Pet owners , Epistemic integrity , Dogs and Animal life.
Alleged implicated AI systems: Vetscan Imagyst and AI diagnostic systems
Incident Stats
Incident ID
1631
Report Count
1
Incident Date
2025-10-01
Editors
Daniel Atherton
Incident Reports
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A veterinary hospital in The Dalles has sued an animal health technology company, alleging its artificial intelligence diagnostic service misidentified a cancerous tumor, leading to the death of an 11-year-old dog.
The lawsuit, filed by Col…
Variants
A "variant" is an AI incident similar to a known case—it has the same causes, harms, and AI system. Instead of listing it separately, we group it under the first reported incident. Unlike other incidents, variants do not need to have been reported outside the AIID. Learn more from the research paper.
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