Diabetic Diet for Cats and Dogs: Feeding Tips

This article provides general information only and is not a substitute for personalised veterinary advice. Always speak with your vet about your pet’s individual health needs. Accurate as at 18 September 2026.

Finding out your cat or dog has diabetes can be a lot to take in. Between insulin, vet visits, and figuring out the most appropriate diet for your pet, there’s suddenly plenty to think about.

With the right care, diabetes can be managed, and diet can play an important supporting role. Alongside vet treatment and regular check-ups, the right feeding plan can help support healthy blood glucose management and keep their weight in a healthy range.

Diet can’t replace veterinary treatment, but knowing what, when, and how much to feed your pet can make day-to-day diabetes management feel a little more manageable.

In this article, we’ll look at what diabetes means for cats and dogs, how food fits into the picture, practical feeding tips, and the everyday habits that can help them thrive.

Table of contents

What is diabetes in cats and dogs?
Diabetic diet for cats and dogs: where to start
Feeding tips for cats with diabetes
Feeding tips for dogs with diabetes
Why helping your pet maintain a healthy weight matters
Pet insurance and its role in your pet’s care

What is diabetes in cats and dogs?

Diabetes mellitus is a condition that affects the way your cat or dog regulates glucose (sugar) in their blood. It happens when their body doesn’t produce enough insulin, or doesn’t respond to insulin effectively.

Insulin is a hormone that helps move glucose from the bloodstream into the body’s cells, where it can be used for energy. When that process isn’t working as it should, blood glucose levels can become too high.

Some of the signs that may indicate your pet has diabetes include:

Drinking or urinating more than usual
Losing weight without an obvious reason
Eating more than usual
Seeming more tired or lethargic

Several factors may indicate your pet’s risk of developing diabetes, including obesity, dental disease, pancreatic disease, and hormonal conditions such as hyperthyroidism in cats and Cushing’s disease in dogs.

For dogs, diabetes is a lifelong condition and treatment centres on regular insulin injections. Cats can be a little different. With early and well-managed treatment, some cats may reach remission and no longer need insulin. It isn’t guaranteed, though, and every cat is different.

For both cats and dogs, managing diabetes is a team effort between you and your veterinary team. Regular monitoring, appropriate treatment, and a suitable diet all have a part to play.

Diabetic diet for cats and dogs: where to start

Before changing what’s in your pet’s bowl, have a chat with your vet. A diabetic diet for cats and dogs doesn’t replace their veterinary treatment, it supports it. Your vet can recommend a feeding plan that works with your pet’s individual needs, weight, and other aspects of their diabetes management.

Once you’ve agreed on a feeding plan, it’s important to keep it as consistent as possible. Your vet may ask you to avoid making any sudden changes to your pet’s food, portion sizes, or mealtimes, though the right approach depends on your pet’s individual circumstances.

If your pet suddenly turns their nose up at their usual food, speak to your vet rather than switching foods on your own.

Keeping an eye on your pet’s weight matters, too. Obesity is a recognised and reversible risk factor for diabetes in cats and can make insulin less effective in the body, known as insulin resistance. There’s also a well-recognised link between excess weight and diabetes in dogs.

Maintaining a healthy weight is therefore an important part of managing diabetes and supporting your pet’s overall health and wellbeing. That’s why your pet’s feeding plan may involve maintaining a healthy weight or gradually working towards one under your vet’s guidance.

Feeding tips for cats with diabetes

When you’re feeding a diabetic cat, two things are particularly important: what you feed them, and keeping their routine consistent.

A low-carb diet for diabetic cats

Cats with diabetes may be moved onto food that’s lower in carbohydrates and higher in protein. Lower-carbohydrate diets are commonly recommended for many cats with diabetes and may form part of a broader treatment plan aimed at improving diabetic control and supporting remission where possible. A higher-protein diet can also help maintain muscle mass.

Feeding routine and portion control for cats

Cats are often fed several smaller meals throughout the day rather than one or two large meals. For a cat with diabetes, that routine becomes even more important. Consistent meals can help support a consistent feeding routine as a part of their overall diabetes management.

A few practical habits can help:

Weigh food portions using digital kitchen scales rather than relying on guesswork. Small differences in meal sizes can add up, and accurate portions help keep daily food intake more predictable.
Keep fresh water available at all times.
Avoid offering extra treats or meals that aren’t part of the agreed feeding plan.
Check with your vet before introducing new foods or treats.

If your cat’s appetite or food preferences suddenly change, speak to your vet before making any major changes to their diet.

Feeding tips for dogs with diabetes

Dogs with diabetes have slightly different dietary needs from cats, so their feeding plan will typically take a different approach.

A high-fibre diet for dogs with diabetes

Dogs with diabetes may benefit from a diet with increased fibre, particularly where weight management or blood glucose control after meals is a priority. The most appropriate diet varies from dog to dog, though. Depending on your dog’s needs, the goal may be to maintain a healthy weight or help them gradually lose excess weight.

Most dogs diagnosed with diabetes need insulin, and diet forms a part of their broader diabetes management plan. Your vet can recommend a diet and portion size that suit their individual needs.

Feeding routine and weight management for dogs

Adult dogs should be fed at least twice a day. For a dog with diabetes, sticking to the same mealtimes each day is especially useful. Ideally, meals should work with their insulin schedule as advised by your vet, helping to support a consistent daily routine and overall diabetes management.

Portion size matters too. Those pleading eyes might suggest otherwise, but a little extra in the bowl every day can add up over time. Your vet can weigh your dog, assess their body condition, and help you adjust their portions and feeding plan safely if needed.

A few practical habits can help:

Weigh food portions using digital kitchen scales rather than relying on guesswork. Small differences in meal sizes can add up, and accurate portions help keep daily food intake more predictable.
Keep fresh water available at all times.
Avoid offering extra treats or meals that aren’t part of the agreed feeding plan.
Check with your vet before introducing new foods or treats.

If your dog’s appetite or food preferences suddenly change, speak to your vet before making any major changes to their diet.

Why helping your pet maintain a healthy weight matters

Helping your pet stay at a healthy weight isn’t about how they look. It’s about helping them live a healthier, happier life. Excess weight is associated with a range of common health problems in Australian dogs, including diabetes.

Maintaining a healthy weight can be an important part of diabetes management and supporting your pet’s overall health and wellbeing.

Keeping on top of portion control and regular body condition checks is a simple, meaningful part of looking after your pet’s welfare.

Whether your pet has diabetes or not, regular vet checks, a diet that’s appropriate for their life stage, sensible food portions, and opportunities for appropriate physical activity all play an important role.

Pet insurance and its role in your pet’s care

Managing diabetes can take a little extra care, but the right routine can make a real difference. A suitable diet, consistent mealtimes, regular monitoring, and working closely with your vet can all play an important part in helping manage your pet’s condition.

Of course, ongoing veterinary care can come with costs. Research conducted by McCrindle Research found that one in three Australian pet owners have delayed a vet visit due to financial pressure.

That’s where pet insurance comes in, helping to cover a portion of these costs so you don’t have to face them alone. With RSPCA Pet Insurance, you can also customise your cover to suit your pet’s needs and your budget. Simply choose the annual cover limit, benefit percentage, excess, and optional extras that suit you best. All while supporting the RSPCA’s vital animal welfare work.

To learn more about how RSPCA Pet Insurance could support you and your pet, click here. Or, if you’re ready to take the next step, you can fetch a commitment-free pet insurance quote online.

Disclaimer

As with any insurance, terms, conditions, and exclusions apply. Please read the Product Disclosure Statement to make sure the cover suits your needs.

References

[1] American Veterinary Medical Association. Diabetes in pets. Available from: https://www.avma.org/resources-tools/pet-owners/petcare/diabetes-pets

[2] International cat care veterinary society. 2025 iCatCare consensus guidelines on the diagnosis and management of diabetes mellitus in cats. Available from: https://journals.sagepub.com/doi/10.1177/1098612X251399103

[3] International cat care veterinary society. Guidelines for nutritional management of feline diabetes mellitus: a proposed classification system integrating medical considerations. Available from: https://journals.sagepub.com/doi/10.1177/1098612X251409019

[4] RSPCA Australia. How do I tell if my dog is overweight? RSPCA Knowledgebase. Available from: https://kb.rspca.org.au/categories/companion-animals/dogs/caring-for-my-dog/how-do-i-tell-if-my-dog-is-overweight

[5] RSPCA Australia. What should I feed my dog? RSPCA Knowledgebase. Available from: https://kb.rspca.org.au/knowledge-base/what-should-i-feed-my-dog/

[6] RSPCA Australia. What should I feed my cat? RSPCA Knowledgebase. Available from: https://kb.rspca.org.au/categories/companion-animals/cats/caring-for-my-cat/what-should-i-feed-my-cat

[7] American Animal Hospital Association. 2018 AAHA Diabetes Management Guidelines for Dogs and Cats: dogs. Available from: https://www.aaha.org/resources/2018-aaha-diabetes-management-guideline-for-dogs-and-cats/dogs/

[8] American Animal Hospital Association. 2018 AAHA Diabetes Management Guidelines for Dogs and Cats: dietary management. Available from: https://www.aaha.org/resources/2018-aaha-diabetes-management-guideline-for-dogs-and-cats/dietary-management/

Further sources

[1] American Veterinary Medical Association. Helping diabetic pets live happily ever after. Available from: https://www.avma.org/javma-news/2021-09-01/helping-diabetic-pets-live-happily-ever-after

[2] WSAVA Global Nutrition Committee. Guidelines on Selecting Pet Foods. Available from: https://wsava.org/wp-content/uploads/2021/04/Selecting-a-pet-food-for-your-pet-updated-2021_WSAVA-Global-Nutrition-Toolkit.pdf

FAQs

No. Diet can be an important part of managing diabetes, but it doesn’t replace veterinary treatment. Many cats and dogs with diabetes need insulin as well as regular veterinary monitoring. Always make dietary changes with your vet’s guidance.

Cats with diabetes are often fed a lower-carbohydrate, higher-protein diet, while dogs with diabetes may benefit from a diet with increased fibre, depending on their individual needs and weight. There’s no universal menu, though. Your vet can recommend the right diet for your pet based on their individual circumstances.

Some cats may reach remission with appropriate veterinary treatment, weight management where needed and a lower-carbohydrate diet. However, remission isn’t guaranteed, and many cats and dogs with diabetes require lifelong management.

Consistency is key. Cats are often fed several smaller meals throughout the day, while adult dogs are generally fed at least twice daily. For pets receiving insulin, your vet will advise you on how to time meals around their doses. It’s important to keep to the agreed feeding routines as closely as possible each day.

Pet insurance may help policyholders with some eligible veterinary costs associated with chronic conditions such as diabetes, depending on the policy and individual circumstances.

Terms, conditions, limits and exclusions apply, so check your policy documents to understand what’s covered.