Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

How to Tell if Your Cat Has Diabetes: 7 Vet-Reviewed Signs to Look For

Share

cat_pasja1000, Pixabay

As cat owners, we want our cats to be healthy and safe. However, a cat owner must know what signs to watch out for that could suggest poor health. For instance, many cats, especially older ones, may develop diabetes mellitus. On average, it is estimated that about one in every 230 cats will get diabetes. Below, we’ll show you seven signs that may indicate a cat has diabetes.

divider cat paws oct 2024

Type I vs Type II

Like humans, cats can have two types of diabetes: Type I and Type II. Type I means the cat’s body doesn’t produce enough insulin. Type II means the cat’s body doesn’t properly respond to the insulin produced. Cats more commonly have Type II diabetes than Type I.

The 7 Signs Your Cat May Have Diabetes

The idea of diabetes can be scary, but veterinarians can provide treatments and advice on managing clinical signs associated with the disease.

1. Frequent Urination

If your cat goes to the bathroom more often, it might be a sign of diabetes, which also causes increased thirst. If you notice your cat urinating and drinking more, take your pet to the veterinarian.

male norwegian forest cat peeing outdoor
Image Credit: Elisa Putti, Shutterstock

2. Lethargy or Weakness

Lethargy is another symptom of diabetes. A lively cat that suddenly becomes less active is a reason for concern. This applies to how your cat walks. For example, a cat walking flat on its hind legs (plantigrade stance) or tripping may be a sign that they have diabetes. If left untreated, it could lead to permanent paralysis of the hind legs.


3. Change in Appetite

A cat eating more than usual or less often can be a sign of diabetes. Several factors can affect your cat’s appetite, but you shouldn’t risk your cat’s health by assuming the condition will improve.

yellow sad sick cat
Image Credit: Nikolay Bassov, Shutterstock

4. Rapid Weight Change

Rapid weight loss or gain is a common sign of diabetes in cats. The more overweight a cat is, the more symptomatic they may be.


5. Vomiting

Vomiting is an obvious sign your cat is sick, and it’s also a symptom sometimes seen with severe cases of diabetes. If your cat begins vomiting, get them to a vet as soon as possible.

cat-vomiting
Image Credit: Tunatura, Shutterstock

6. Using the Bathroom Outside of the Litter Box

A cat using the bathroom outside of the litter box could mean the lethargy and weakness brought on by the diabetes is making it harder for them to get to the litter box.


7. Lack of Interest

If your cat usually enjoys playing and suddenly doesn’t care anymore, then you should talk to a vet. A sudden change in personality could be due to fatigue brought on by diabetes.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money

divider cat paws oct 2024

Treatment

The typical treatment for a cat with diabetes is once- or twice-daily insulin injections. You will also need to keep your pet on a strict, low-carbohydrate diet to keep them at a healthy weight and maintain glucose levels. These treatments are instrumental in reducing symptoms to keep your cat healthy and happy.

If you’re worried about your cat’s lifespan, you need not fret. A properly medicated diabetic cat may have a life expectancy of 13 to 17 years.

divider cat paws oct 2024

Final Thoughts

Diabetes is a serious condition, and if your cat exhibits these signs, you need to bring them to a vet. With proper treatment, your cat can live their life as comfortably as it did before and may even go into remission.

See Also: 


Featured Image Credit: pasja1000, Pixabay

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

2 Responses

  1. I have a 17 year old long-haired Russian Blue beauty and she has diabetes. She also has arthritis in her hips because she once weighed almost 21 lbs. I have been giving her 2 1/2 units of insulin every 12 hrs. for about a week. She still urinates outside of her box. She gets right into the box and uninates right on the edge, sometimes urinating over the edge, so I put puppy urine pads down. I just ordered her a sleeping pad with infra-red heating to help her with the arthritis. Will this help to eliminate the urinating outside of the box? The box is 24 inches x 18 inches and the walls of the box are only 8 inches high.

    1. Hi Donald. It is very common for senior cats with both diabetes and arthritis to struggle with "edge-of-the-box" accidents, as the high urine volume from diabetes (polyuria) combined with the physical pain of squatting creates a perfect storm for missing the target. While your new infrared heating pad is an excellent investment that will likely improve her mobility and comfort levels, it is unlikely to stop the accidents on its own if the physical act of climbing into and posturing in an 8-inch box remains painful. Since a 17-year-old cat with hip arthritis often finds it difficult to sustain a deep squat, she likely stands taller while urinating to relieve pressure on her joints, causing the stream to go over the side. We suggest switching to a low-entry, high-walled litter box—often made by cutting a wide "walk-in" notch into a large plastic storage tote—which allows her to enter without lifting her legs while the high back and sides catch any "high-aim" urination.

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

The 10 Common Causes of Sudden Death in Cats (And Which Ones Are Preventable)

Most cat owners don’t think much about heart disease, internal hemorrhage, or viral infections until they’re staring at an empty bed. Sudden death...

Ask Dr. Paola – Help! My Cat Suddenly Has Dandruff! (March 30, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

Your Cat Keeps Vomiting After Eating: Here’s What’s Going On

Cats vomit. It’s one of the less glamorous facts of life with a feline, and most cat owners have cleaned up more than...

Ask Dr. Paola – Help! My Cat Gets Diarrhea from Wet Food! (March 23, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

More related

When Cats Are Terrified of the Outside World: Olga’s Fears

Hi, I’m Christopher! Read my introduction to learn more about me and my silly Russian Blue cat, Olga. Outdoor cats enjoy their freedom...

What Place Do Cats Have in Japanese Culture? History, Art & Folklore

Felines are quite popular in Japan, and you will find them depicted throughout Japanese pop culture, from the “Maneki Neko,” the beckoning cat,...

Are Tomato Plants Toxic to Cats? Vet-Reviewed Houseplants Examined

There’s nothing more exciting than welcoming a new cat into your life. Having a pet involves taking good care of it and buying...

10 Best Dry Cat Foods in Canada in 2026 – Reviews & Top Picks

If you have a new cat and are looking for the best dry food or you need to switch your current cat’s food,...

Keep reading

Environmental Enrichment for Cats: 12 Vet-Reviewed Tips

While indoors is the safest place for cats, it’s not always the most enriching. It’s important to remember that cats, at their very core, are wild animals. Their ancestors ruled the outdoors, hunting, exploring, and fending for themselves. While your...

Cute gray cat on a cat tree

How Do Cats Hunt Mice at Night? Vet-Approved Cat Behavior Guide

We all know the relationship between cats and mice. If a mouse is in your house, whether your cat is the world’s laziest hunter or the best, they will probably notice. Knowing of the relationship between cats and mice may...

black and white young cat looking at a mouse outdoor

Why Does My Cat Bite Their Feet? 7 Vet-Verified Reasons

Cats do all sorts of strange things! The motivations of most feline behavior remain, for the most part, opaque at best, with cat lovers reduced to playing with educated guesses when attempting to explain their pets’ various quirks. They intentionally...

bengal cat biting its paw

Senior Cat Grooming: Vet Approved Facts & Tips

Felines are fastidious creatures. They love to be clean and spend much of each day grooming themselves. As cats age, they sometimes have trouble grooming those hard-to-reach places. Older felines can have trouble contorting into the needed position to reach...

man brushing norwegian forest cat

Why Is My Cat So Affectionate All of a Sudden? 4 Vet-Reviewed Reasons

We can all agree that receiving affection from our cats is rarely a bad thing. However, if your cat is suddenly affectionate, you may be a bit suspicious as to why your cat won’t leave your side. Any little change...

tabby cat lying on a womans chest

How Do I Give CPR to a Cat? Vet-Verified Step-by-Step Guide

Performing a feline cardiopulmonary resuscitation (CPR) is a procedure every veterinarian and technician master, but likely not every cat companion. CPR is used to maintain blood flow and oxygen delivery throughout the body when a cat’s heart stops beating. It...

performing pulmonary rescucitation with an ambu bag on a cat

Can Cats Have Asthma? Vet-Approved Causes, Signs, & Treatment Tips

Though it hasn’t been as extensively studied as asthma in humans, cats can indeed get asthma. Feline asthma can range from mild to life-threatening, and the signs vary from acute to chronic respiratory problems. It’s an inflammatory disease of the...

tabby cat looking sad or sick lying on bed

How to Keep Cats Healthy: 10 Vet-Approved Tips to Boost Your Cat’s Mental & Physical Health

Cats are family members, and it makes sense for pet parents to do everything possible to ensure their companions get whatever they need to be happy and healthy. Creating cat-friendly environments by providing pets with activities and entertainment can go...

white cat with the owner

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.