|pagebody = Ulcerative enteritis is relatively uncommon. Very severe lesions pentrate through the mucosa, producing haemorrhage and death, (e.g.
+
in dogs with a mast cell tumour, in [[Bovine Viral Diarrhoea Virus|bovine viral diarrhoea-mucosal disease]], in some bacterial diseases - e.g. [[Salmonella|Salmlonellosis]].