Coccidiosis Caused by Isospora ohioensis-like Organisms in Three Dogs.

Three dogs with atypical coccidiosis are described. The age and clinical signs were not those normally associated with coccidiosis described in the literature. The ages of the three dogs were twenty-two months, five months and twelve weeks respectively. The clinical signs were recurrent mild to severe diarrhea, depressed growth and poor body condition. Repeated fecal examinations were needed to diagnose the disease. Sulfamethazine and amprolium were used successfully in treating the condition in all cases.