Pneumocystosis: a chronic respiratory distress syndrome in the dog.

Pneumonia caused by Pneumocystis carinii in two unrelated Miniature Dachshunds is reported. The clinical findings, gross- and histopathology and some diagnostic transmission and scanning electron microscopic features of the condition are described. Although pneumocystosis has been reported from a human and a domestic goat in the Republic of South Africa, these are probably the first reported cases of the canine disease in this country.