Haemorrhagic gastroenteritis in the dog associated with Clostridium welchii.

Two cases of peracute haemorrhagic enteritis in the dog are reported. Gram-positive bacilli, which were shown in one case to be Clostridium welchii were found adhering to the necrotic epithelial surfaces in parts of the gastrointestinal tract in both cases. Large numbers of C welchii were recovered from the intestines of both dogs.