Three initial symptoms of diabetes in cats are drinking a lot of water, urinating frequently and losing weight despite eating well. Laboratory findings indicative of diabetes are elevated blood glucose and glucose in the urine.
If diabetes is not diagnosed and treated early, symptoms of advanced diabetes include loss of appetite, weakness and an acetone smell to the breath. If not treated, the cat lapses into a coma and then dies. Diabetes is a very common disease in pet cats, affecting one in 400. Being overweight, male and over the age of 10 are all risk factors for developing diabetes.