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1: J Am Vet Med Assoc. 1992 Mar 15;200(6):817-8.Links

Pennyroyal oil toxicosis in a dog.

Animal Health Diagnostic Laboratory, College of Veterinary Medicine, Michigan State University, East Lansing 48824.

A dog was treated for fleas with the application of pennyroyal oil obtained by the owner at a health food store. Vomiting ensued within 2 hours, and despite emergency treatment, the dog died within 48 hours. At necropsy, pennyroyal oil was determined to be the cause of death.

PMID: 1568929 [PubMed - indexed for MEDLINE]