Cat eating food out of bowl. Cat eating food out of bowl.

Diabetes in Cats

Detection and Diagnosis

Watch for Changes

There can be visible changes to your cat’s behavior and overall health from diabetes, and no one knows your pet better than you. It is important that your cat be thoroughly examined by a veterinarian at least once a year. For cats at risk, more frequent visits may be advised.

Signs of Feline Diabetes

Knowing the signs of diabetes is the first step in protecting your cat’s health. If any of these signs apply to your pet, bring your cat to your veterinarian for a checkup:

Cat sitting next to puddle.

Urinates frequently or large amounts

Blue and green cat water bowl icon with fish bone.

Drinks a lot of water

Blue and green cat food icon with fish bone.

Always hungry

Blue and green weight scale icon with cat paw print.

Weight loss

Blue and green dull or dry coat icon for cats.

Dull or dry coat

Blue and green sleepy cat icon.

Sleeps more or is less active

“When I was first diagnosed, I was depressed and didn’t want to play. Diabetes can show many signs like this.”


Cartoon cat with purple collard and heart shaped pendant

A Visit to Your Veterinarian

If your cat shows signs of diabetes, your veterinarian will ask about them, and check your cat’s general health to rule out the possibility of other conditions or infections.

The first test your veterinarian will do is check your cat’s urine for the presence of glucose and ketones. If indicated, the next step is to measure your cat’s blood glucose concentration. The diagnosis only becomes definite when glucose is persistently found both in the urine and at a high level in the blood.

Further Reading

Golden retriever and cat laying next to each other. Golden retriever and cat laying next to each other.

Talk to Your Vet Today

Find a veterinarian to learn more about pet diabetes, and how cats and dogs can lead a happy, healthy life with proper management.


VETSULIN® and VETPEN® are for use in animals only. Dogs and cats known to have an allergy to pork or pork products should not be treated with VETSULIN®. VETSULIN® is contraindicated during periods of hypoglycemia. Animals with severe ketoacidosis, anorexia, lethargy, and/or vomiting should be stabilized with short-acting insulin and appropriate supportive therapy before use. As with all insulin products, careful patient monitoring for hypoglycemia and hyperglycemia is essential. Overdosage can result in profound hypoglycemia and death. Progestogen and glucocorticoid use should be avoided. The safety and effectiveness of VETSULIN® in puppies, kittens, breeding, pregnant, and lactating dogs and cats has not been evaluated. Keep out of reach of children. Avoid contact with eyes. In case of contact, immediately flush eyes with copious amounts of water for at least 15 minutes. Accidental injection may cause clinical hypoglycemia. In case of accidental injection, seek medical attention immediately. Exposure to the product may induce a local or systemic allergic reaction in sensitized individuals. For complete safety information, refer to the product label.