A 2-year-old intact male Siamese cat was presented to the University of Wisconsin School of Veterinary Medicine's Dermatology Service for evaluation of self-mutilation and psychogenic licking of the forelimbs and abdomen.

A 1-year-old 66-lb (30-kg) intact male Labrador retriever was presented to the University of Wisconsin School of Veterinary Medicine's Dermatology Service for evaluation of severe pruritus and skin eruptions on its trunk and distal extremities.