Does My Dog Have Diabetes?

A dog with its two front paws up on a table sniffing an assortment of pies and other holiday treats.

We may be reaching for the Turkey Day pants soon, but before Rover begins dreaming about a Thanksgiving feast, it’s probably best to discuss their current health status. It’s never a good idea to indulge your pet’s desire for fatty or sugary people food, but if there’s a possibility that your dog has diabetes, ’tis the season for extra precautions. But how do you know if and why your dog might have diabetes?

How Does Diabetes in Dogs Happen?

If your dog has diabetes, it doesn’t necessarily mean you did something wrong like feeding an incorrect diet or not offering enough exercise. In dogs, the cause of diabetes is not well understood. However, it is thought there is a genetic component. Certain breeds, like schnauzers and miniature poodles, are more at risk than others. Most diabetic dogs have insulin-dependent diabetes and insulin treatment is required. They are very similar to humans with Type 1 diabetes in that the pancreas can no longer produce insulin.

Pancreatitis is also a risk factor for diabetes, so if your dog suffers from it, a low-fat diet can be very important. Obesity falls into that category as well. Other risk factors include age, sex and concurrent diseases such as Cushing’s disease.

Warning Signs of Diabetes in Dogs

Early diagnosis is crucial to successfully managing diabetes. If you notice any of these signs of diabetes in your dog,* consult your veterinarian.

  • Increased drinking
  • Increased urination
  • Excessive appetite
  • Weight loss
  • Dehydration
  • Poor haircoat
  • Muscle wasting
  • Cataract formation

*Additional signs may be present if there are concurrent diseases like a urinary tract infection, Cushing’s disease or pancreatitis.

Diagnosis and Care of Diabetes in Dogs

If you suspect your canine has diabetes, make an appointment with your veterinarian as soon as possible. It is best to catch any underlying illness as early as you can. Your dog’s doctor will likely perform bloodwork and a urinalysis to measure the amount of glucose. A diagnosis is only definitive if high levels of glucose are found in both the urine and blood.

Similar to diabetes in people, this illness can be life-threatening to a dog. Keeping the condition regulated will be key in a great life for Rover moving forward. Your veterinarian will visit with you about Rover’s new diet, exercise, insulin and vet visit schedule.

They will adjust the insulin amount you give Rover based upon follow-up testing. It can be an overwhelming time as a pet owner, but rest assured your veterinarian will carefully train you on how to administer insulin or any other medicines necessary to get your canine on a healthier track. They will also provide best-care practices so you go home with a better footing on what Rover needs from you.

Follow the veterinarian’s instructions carefully and continue to monitor your dog between their doctor visits. If your pet’s symptoms worsen or something seems out of the ordinary, do not be afraid to call your veterinarian between appointments. They are there to help! Once the disease is managed, your dog has the potential to live a long, happy and healthy life.

It’s important to note that if Rover does have diabetes, do not forget to take care of yourself, too. You love your dog and want the best for them. It is completely normal if you feel overwhelmed or stressed at times. Don’t forget to lean on your support system and ask your veterinarian questions to understand the situation better.

Holidays Are Not Days for Changing It Up

If your dog is diabetic, the safest move is to not alter their diet or routine because the holidays are upon us. In fact, it’s a time to be extra vigilant that your dog’s food intake stays the same. Make sure no one is slipping them table scraps at the Turkey Day table!

Pet Diabetes Month: Monitoring Blood Glucose at Home

Taste of the Wild

When you live with a diabetic pet, controlling blood sugar, or glucose, can be a bit of a balancing act. If the glucose dips too low, your pet may show signs of weakness, confusion, seizures and even loss of consciousness, requiring emergency veterinary care. When it’s too high, pets often drink and urinate more than usual and potentially develop other complications.

To arrive at “just the right” insulin dose that keeps your pet’s diabetes controlled, periodic blood glucose monitoring is usually required. In the past, pets would typically spend a day at the veterinary clinic for a blood glucose curve. During that time, the veterinary staff would take blood glucose samples every two hours for up to 12 hours.

The trouble with in-clinic glucose testing is that pets often become stressed in the unfamiliar environment, which can artificially raise blood glucose levels. That’s why the American Animal Hospital Association recommends at-home glucose testing, when possible. Pets are usually less stressed at home, which means results will be more accurate. At-home testing can save you money. It can also help identify a hypoglycemic (low blood sugar) event, so your pet gets treatment faster.

While at-home glucose testing may not be for every owner or pet, many are finding the procedure relatively simple.

First, team up with your veterinarian

Work with your veterinarian to decide the best approach for you and your pet.

If you decide to try in-home testing, your veterinarian will help you learn the correct procedure and provide detailed instructions on information you should send back to the clinic. He or she will use this information to decide if adjustments need to be made to the type or dose of your pet’s insulin. You should never make insulin dose adjustments on your own, without consulting your veterinarian.

Sampling blood glucose at home

Your veterinarian may recommend using a hand-held glucometer at home, much like human patients with diabetes may do. Ideally, you’ll use one that’s calibrated for dogs and cats, for the most accurate results.

The doctor can show you how, using a lancet, to obtain a tiny drop of blood from a range of locations, such as your pet’s ear or foot pad. With a little practice, it can be a quick and relatively painless procedure. Add praise and treats, and it’s all the better for your pet.

The drop of blood is then applied to a test strip inserted into the glucometer. Within a few seconds, the blood glucose reading is displayed.

To obtain a blood glucose curve, your veterinarian will typically ask you to take a blood glucose reading every two hours for 10 to 12 hours. This information is then sent back to your veterinarian for review and dose adjustments, as needed.

Continuous glucose monitoring systems

Recently, continuous glucose monitoring systems have become available that are less invasive and easier for owners and pets because they don’t require any blood sampling. Currently, the most common system prescribed by veterinarians is the FreeStyle Libre, which is designed for humans, but can also be used in pets.

The system consists of a small, circular glucose sensor with a tiny tube that’s adhered to the pet’s skin.  The sensor, which is about the size of two stacked quarters, measures the glucose in the fluid under the skin once a minute for up to 14 days. A handheld reader can wirelessly scan the sensor and save the glucose readings (with an app, your smart phone can serve as a reader).

The amount of glucose in this fluid is slightly different than what’s in the blood, but it’s fine for general monitoring. For pets that are showing signs of hypoglycemia, however, a blood sample and glucometer should be used.

Implanting the sensor is a quick, simple and typically painless procedure that usually doesn’t require anesthesia. The veterinarian shaves and cleans a patch of skin on your pet and presses the sensor into the skin. Your pet may need to wear a shirt or bandage to help prevent the sensor from becoming dislodged. The doctor will explain how to transfer the data to the clinic. After two weeks, the sensor should be disposed of properly.

Watch your pets for signs

Even with all this blood glucose data, you should still watch your pet for signs that diabetes may be out of control. It helps to keep a daily diary that lists information such as food and water consumption, insulin dose administered and general amount/frequency of urination. If possible, weigh your pet periodically. Changes in weight, appetite, thirst, urination and even energy level should spark a call to your veterinarian.

How Cat Obesity Can Lead to Feline Diabetes

A close-up of an overweight gray and white cat sitting on a kitchen floor.

If your cat is a bit rounder than they used to be, that’s not so unusual — there are more overweight cats in the U.S. than cats of an optimal weight. The problem is that carrying a few extra pounds can have negative effects on your cat’s health, including high blood pressure, osteoarthritis, kidney disease, respiratory difficulties and even some types of cancer. But the health condition with the strongest link to obesity in cats is diabetes. 

Can Cats Get Diabetes?

Yes! Diabetes — or more appropriately, feline diabetes mellitus — occurs when a cat’s pancreas doesn’t make enough insulin or has lost the ability to produce insulin altogether. Diabetes mellitus can also occur when the body’s cells don’t respond normally to the insulin that the pancreas does make, a phenomenon called insulin resistance.

Insulin is a hormone that is necessary for cells to take in glucose (blood sugar) from the bloodstream. Not only does insulin resistance contribute to diabetes, it is also thought to play a role in other diseases, such as kidney disease, liver disease and cancer, as well as contributing to ongoing obesity.

Most diabetic cats develop type 2 diabetes, which is when their bodies are unable to properly use insulin, and may need an insulin injection once or twice a day for the rest of their life. Sometimes this type of diabetes can be reversed, meaning the cat can go into remission and insulin injections are no longer needed. Early diagnosis, treatment with insulin and a change in diet provides the greatest chance of reversing diabetes in a cat. However, if the cat hasn’t gone into diabetic remission within six to 10 months of diagnosis, they will likely need lifelong insulin treatment.

What Causes Diabetes in Cats?

Diabetes has been diagnosed in cats of all ages and breeds, and in both males and females, including neutered, spayed and intact cats. However, certain cats — especially obese cats — are at greater risk of developing the disease. Older cats, particularly neutered male cats, are also more likely to develop diabetes. 

Other risk factors in cats include inactivity, genetics, increasing age, infections, pancreatitis (inflammation of the pancreas), kidney disease, steroid medications and endocrine disorders.  High calorie foods are more likely to cause a cat to become overweight, especially if that cat is an inactive indoor kitty.

To help your cat avoid diabetes:

  • Maintain them at a healthy weight. If you’re not sure how much your cat should weigh, talk with your veterinarian.
  • Feed a complete and balanced diet. This includes limiting treats to no more than 10 percent of your cat’s daily calories.
  • Provide your cat with plenty of physical activity. Exercise helps keep them from becoming bored and can help manage their weight.

Signs of Diabetes in Cats

Symptoms of diabetes include increased thirst and urination, and weight loss despite an increased appetite. These clinical signs can also be caused by other conditions in cats, such as hyperthyroidism and kidney disease. So if you notice these symptoms, make an appointment with your veterinarian to confirm a diagnosis, especially as uncontrolled diabetes can be fatal.  

Feline Diabetes Treatment Options

While a diagnosis of diabetes may initially feel overwhelming for cat owners, diabetes is a condition that you can manage with the help of your vet, especially in the early stages. Diabetes can’t be cured, but managing diabetes is possible with daily insulin injections and diet changes that can keep your cat’s blood glucose levels regulated and reduce or eliminate diabetes symptoms.

Diet Changes for Cats Diagnosed with Diabetes

Diet can play a big part in the management of diabetes and maintaining normal blood glucose levels. Cats have a unique ability to use protein to make a steady supply of glucose for energy. Many veterinarians consider a food containing high levels of good-quality protein and low levels of carbohydrates ideal for diabetic cats. Because cats are obligate carnivores, the high-protein diet more closely mirrors a diet they might eat in the wild.

If you switch your diabetic cat to a high-protein, low-carbohydrate diet, it’s important to do so under the guidance of a veterinarian. With this type of diet, your cat may need less insulin over time. However, not all cats respond best to the same diet. Other diets formulated for diabetic cats may include high fiber to aid in glucose metabolism. 

It’s important to always work with your veterinarian to ensure your cat is maintaining normal blood glucose concentrations and you aren’t putting your cat at risk for hypoglycemia or low blood sugar. Diabetic ketoacidosis, which is a medical emergency, can also be a risk if your cat doesn’t receive enough insulin. Diabetic cats should be fed the same amount of food at the same times every day to help maintain normal blood sugar levels. 

Remission doesn’t mean a cat with diabetes is cured. It’s still important that your cat maintains a healthy weight and body condition, eats appropriate food and stays active. And in some cases, your kitty may still need a once- or twice-daily insulin dose in the future.

How to Prevent Cat Obesity and Diabetes

Getting your cat down to a healthy weight helps prevent disease, enhances their quality of life and can actually help them live longer. Chubby cats can also have more trouble jumping, playing and climbing.

Ideally, your cat should lose weight gradually, trimming off about 3 to 5 percent of body weight per month. Slow weight loss is very important as cats are at risk for a dangerous liver condition called hepatic lipidosis if their calorie intake is restricted too quickly.

Research has shown that obesity, age and lack of activity are the main contributors to insulin resistance and diabetes in cats. So, if you want to reduce your furry friend’s risk of diabetes, feed them appropriate amounts so that they maintain an ideal (or optimal) body condition and make sure they get plenty of activity. Make a commitment to spend three 5-minute aerobic play sessions with your cat each day.

Diabetic Cats Can Live a Full Life

Although diabetes can’t be cured, it is possible to successfully manage your cat’s diabetes through daily insulin therapy, monitoring your cat’s blood sugar, feeding an appropriate diet and regular physical activity. With appropriate care and attention, there’s no reason why your diabetic cat can’t fully live out the rest of their natural lifespan.

Work With Your Vet to Choose an Over-the-Counter Food for Your Diabetic Pet

Taste of the Wild

A diabetic pet can be expensive. There’s the cost of the insulin, the syringes and the frequent veterinary visits. So do you really need to pay for a prescription diet, on top of all that?

Not necessarily.

It depends on several factors, including whether your diabetic pet is a cat or a dog, their weight and any other health conditions.

Cats usually have type 2 diabetes, meaning their bodies may be unable to properly use insulin, a hormone produced by the pancreas. Sometimes, this type of diabetes can be reversed, meaning the cat can go into remission and insulin injections are no longer needed. And diet can play a big part in that.

Dogs, on the other hand, tend to have type 1 diabetes, which is a deficiency in insulin. Diet may help manage the condition, but it usually can’t lead to diabetic remission.

Because there are many factors to consider, it’s important to talk to your veterinarian when choosing a food for your diabetic pet.

For Diabetic Cats, Protein’s Where It’s At

In studies, diabetic cats given insulin and a high-protein, low-carbohydrate diet were more likely to go into remission than those fed a high-fiber, moderate-carbohydrate diet. Because cats are obligate carnivores, the high-protein diet more closely mirrors a diet they might eat in the wild.

Your veterinarian may also recommend a canned formula. Compared with dry diets, canned foods tend to be higher in protein and lower in carbohydrates.

If you switch your diabetic cat to a high-protein, low-carbohydrate diet, it’s important to do so under the guidance of a veterinarian. With this type of diet, your cat may need less insulin over time. Giving the same amount of insulin could put your cat at risk for hypoglycemia, or low blood sugar. While cats in remission no longer require insulin, it is important to keep feeding the high-protein diet to reduce the likelihood of them becoming diabetic again. With this type of diet, your cat may need less insulin over time. However, it’s important to always work with your veterinarian to ensure you aren’t putting your cat at risk for hypoglycemia or low blood sugar.

For Diabetic Dogs, Fiber May Help

Unlike cats, diabetic dogs do not require a high-protein diet, but they may benefit from a diet that’s high in fiber. This type of diet can slow absorption of glucose from the intestines, so there are fewer spikes in blood glucose directly after a meal.

A diabetic dog that is well controlled on insulin and is a normal weight may be fine on complete and balanced over-the-counter foods that are appropriate for the dog’s age and health. Again, it’s important to consult your veterinarian to make sure a diabetic dog is receiving the nutrition they need.

Weight Is Another Issue

While weight loss in an overweight pet is usually a good thing, it can also be a sign of diabetes. If that’s the diagnosis, and the pet’s condition becomes controlled with insulin, the weight loss should slow down or stop. However, if the pet remains obese, your veterinarian may recommend a special (either OTC or prescription) diet. For animals who are diabetic, obesity can make their cells less sensitive to insulin. In these cases, a weight management diet that helps them gradually lose weight might be best. A high-fiber, low-fat and low-calorie diet may be beneficial for both dogs and cats. The high-protein diet mentioned above may also help cats drop the additional pounds.

Many pets that have diabetes for a long time before they are diagnosed may actually become too thin. In these cases, your veterinarian may recommend a high-fat, high-protein diet to help them back to a normal weight, or keep them on the same diet but in increased quantities.

Take Other Health Conditions Into Account

If your pet has other health conditions, such as kidney or digestive tract disease, your veterinarian may suggest additional adjustments to your pet’s diet. A cat with advanced kidney disease, for example, may benefit from a diet that is somewhat lower in protein and phosphorus than the high-protein foods typically suggested for cats with diabetes only.

The Bottom Line

Diabetes in a pet isn’t a death sentence, and it’s certainly not a death sentence for your wallet. While some cases require more complicated measures as far as diet goes, it very well may be possible to buy what your pet needs over the counter. Since every pet is unique, it pays to work with your veterinarian to land on the diet that works best for your pet.

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