Feeding Considerations For Dogs With Diabetes: A Veterinary Nutrition Guide

by Elizabeth Kowalski, CVT, FFCP

 

When a dog is diagnosed with diabetes, most pet parents have questions about daily care, including what to feed a diabetic dog. Working closely with your veterinarian can help you create a feeding routine that supports your diabetic dog’s long-term health and well-being.

Here, we discuss diabetes in dogs, including nutrition considerations for pet owners to keep in mind and questions to ask during your dog’s next vet visit.

What is diabetes in dogs?

Dogs with diabetes have a condition that affects their body’s ability to use glucose for energy. In a healthy dog, the pancreas produces a hormone called insulin, which helps move glucose from the bloodstream into the cells. Dogs with diabetes don’t produce enough insulin, so glucose builds up in the blood instead of reaching the cells that need it.

Most diabetic dogs have insulin-dependent diabetes, meaning they need daily insulin injections to keep their glucose levels in a safe range. Without insulin, dogs can develop dangerously high blood sugar levels that can become life-threatening over time.

Symptoms of diabetes in dogs may include:

• • Frequent urination: Excess sugar in the blood spills into the urine, drawing water with it. Diabetic dogs produce a large amount of dilute, sometimes sticky or sweet-smelling urine, and may have accidents in the house.

• • Excessive thirst: Diabetic dogs must drink more to stay hydrated because their bodies lose water through urination.

• • Increased appetite: Affected dogs may act ravenously hungry because their cells can’t absorb glucose. Even when energy is available, the body thinks it’s starving.

• • Weight changes: To compensate for an inability to use glucose for energy, diabetic dogs begin breaking down fat and muscle.

• • Lethargy or decreased energy: Diabetes affects many body systems and makes most pets feel sick.

Nutrition considerations for dogs with diabetes

Alongside an insulin regimen, your veterinarian will likely discuss feeding as one part of your dog’s overall care plan. A special diet alone cannot usually treat or control diabetes, but it plays an important supporting role in the long-term management of the disease.

Nutrition considerations your veterinarian may discuss with you include:

• • Feeding consistency: Feeding the same amount of food at the same times each day helps keep your dog’s glucose levels steady and helps your vet better predict and track your dog’s response to treatment.

• • Calorie awareness: Your vet can calculate the right daily calorie intake for your dog based on their size, breed, and current body condition.

• • Fiber for balanced nutrition: Fiber-rich foods may support healthy digestion and help some dogs maintain more consistent blood sugar levels throughout the day. Your vet can recommend the right balance of soluble and insoluble fibers for your dog.

• • Maintaining body condition: Diabetes can make it harder for pet parents to control their pet’s weight. The right diet can help to manage under- or overweight pets and keep their weight more stable over time. Ask your vet if a diabetic dog food is right for your pet.

 

Nutritional characteristics to discuss with your veterinarian

The best dog food for diabetic dogs depends on the individual pet, but it usually has specific nutritional characteristics. Every diabetic dog diet should be tailored to the individual dog and developed with your veterinarian. Here are a few key things to discuss with your vet to determine the right diet for your dog.

High-quality protein

High-quality protein helps dogs maintain muscle mass and supports cellular functions. Lean proteins like chicken, turkey, and fish are common ingredients in foods suitable for diabetic dogs. Keeping muscles healthy can help protect against muscle loss in dogs with diabetes.

Fiber sources

Fiber-rich foods, including vegetables like pumpkin and sweet potato, can be part of a balanced diet for some dogs with diabetes. For overweight diabetic dogs, higher-fiber diets may help them feel full and slow down digestion, which can affect blood glucose levels.

Carbohydrate sources

Carbohydrates have a distinct impact on a diabetic dog’s blood sugar. Complex carbohydrates from brown rice, barley, and whole grains release energy slowly, while simple carbohydrates from fruit or dairy are digested more quickly. Of note, low glycemic dog food has ingredients that minimize blood sugar spikes. However, grain-free dog food is not the same as low glycemic food, as it may still include starchy carbohydrate sources.

Healthy fats

Fat is an important consideration in dog food for diabetic dogs. Too much fat can contribute to weight gain and may increase the risk of pancreatitis, an inflammatory and potentially life-threatening condition that affects some diabetic dogs. However, fat also helps to slow digestion, promote fullness, and counteract weight loss.

Portion consistency

Measuring your dog’s food at each meal helps keep their calorie intake predictable, which supports your vet’s ability to fine-tune insulin doses. Use a kitchen scale or measuring cup to ensure consistent meal sizes each time your pup eats.

Limited treats

Dogs with diabetes can still enjoy treats, but pet parents should be thoughtful about what and how much they offer. Low-calorie, low-carb options like green beans or chicken can show your dog love without disrupting blood sugar regulation.

Feeding approaches to discuss with your veterinarian

Diabetes management can be stressful, but your veterinarian can help. Always consult your vet, who understands your dog’s unique health history and how they respond to changes in lifestyle, diet, or insulin, before switching foods or feeding strategies for your diabetic dog.

Veterinary therapeutic diets

Therapeutic diets are available only by prescription from your vet to address specific health conditions such as diabetes, cancer, or kidney disease. They’re formulated by veterinary nutritionists and tested rigorously. For some dogs with diabetes, a therapeutic diet, which is available in dry food and wet food options for diabetic dogs, can help manage their disease better than insulin alone.

Commercial complete and balanced diets

If your vet determines that a prescription diet isn’t necessary, many commercial dog foods can also meet the needs of dogs with diabetes. Look for foods that carry an AAFCO statement confirming they are complete and balanced, and have your vet evaluate the ingredients list to determine which food best suits your dog’s needs.

Veterinarian-supervised homemade diets

Homemade diets are an option for diabetic dogs, but they must be carefully formulated by a veterinary nutritionist to ensure they are complete and balanced. Cooking for your dog without veterinary guidance can lead to nutrient imbalances and deficiencies.

Foods and feeding habits to review with your veterinarian

Diabetic dogs need consistent schedules and predictable calorie and carbohydrate intake to keep their blood sugar levels stable. At your next vet visit, ask whether the following habits are acceptable for your diabetic dog.

• • Table scraps: Food that diabetic dogs eat in addition to their regular meals can affect glucose levels and make it harder for your vet to determine an appropriate insulin dose.

• • High-calorie snacks: Treats high in sugar, fat, or carbs can cause blood sugar spikes and lows that contribute to weight changes and other health issues, such as obesity.

• • Abrupt diet changes: Suddenly switching your dog’s food can affect glucose levels and insulin needs in unpredictable ways. No matter how small the change, ask your vet for help in safely planning for a period of adjustment.

• • Highly processed foods: Foods containing fillers or low-quality ingredients may not meet the nutritional needs of healthy or diabetic dogs. Less processed dog food with recognizable, whole-food ingredients is a good option for some of these pets.

• • Free-feeding: Filling your dog’s bowl and leaving food out all day can complicate diabetes management. Without discreet mealtimes, you have no way to know when or how much your pet ate, a critical factor in determining how much insulin they should receive.

 

Transitioning your dog to a new food

If your veterinarian recommends switching to a different dog food for diabetic dogs, a gradual transition can help them adjust. Here are a few things to keep in mind during this time:

• • Pair meals with insulin injections: Most veterinarians recommend giving insulin at or near mealtime. Never adjust the schedule or dose without consulting your vet first.

• • Stick to a feeding schedule: Feeding at set times each day helps maintain more stable glucose levels during the transition period.

• • Transition slowly: Start with about 25% new food mixed with 75% of the current food, and slowly increase the ratio over the course of a week.

Supporting overall wellness through consistent nutrition

Diabetes is a complex disorder that requires consistent veterinary care, daily insulin injections, ongoing monitoring, a regimented routine, and the right dog food. A complete, balanced, and appropriately portioned diet supports overall well-being and normal bodily functions, which is especially important for those with medical conditions. 

JustFoodForDogs offers a variety of human-grade, fresh dog food diets for healthy pets and those with health concerns. If your dog has diabetes or any other special dietary needs, ask your veterinarian if a custom-formulated or therapeutic diet might be right for your pet. 

FAQs about dog food for diabetic dogs