Diabetes mellitus is a common feline endocrinopathy. Various factors i
nfluence its incidence. Hyperosmolar nonketotic diabetes mellitus, how
ever, is an uncommon complication in the cat. Precipitating conditions
or severe diseases are associated with this form of diabetes. This pa
per is a review of hyperosmolar nonketotic diabetes mellitus in the ca
t and the successful treatment of one cat.