Get

In Your Inbox

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

Why Is My Dog Always Hungry? 12 Vet-Reviewed Reasons

Hungry Welsh corgi Pembroke or cardigan puppy eats from ceramic bowl standing on fleecy carpet

It’s no secret that many of our canine companions are voracious eaters! They are always into something and can never be trusted around the family garbage can. But how hungry is too hungry?

If you’ve noticed some appetite changes lately or you’re not sure exactly what is normal, we’re going to discuss some potential reasons your dog might be feeling a little more hungry than usual. Often, the answer is simple.

divider single dog paw oct 2024

The 12 Reasons Your Dog May Be Always Hungry

1. Competition for Resources

This obsessive eating behavior is something that they might have learned with their littermates. If you’ve brought home a new puppy or dog and they seem to be devouring their meal as they’ve never seen food before, it’s very likely because they are used to the survival of the fittest mentality, especially if you have more than one dog in the home.

When littermates eat together, or when dogs have had to live in close company with other dogs, it is often a rush to the finish line due to competition for resources. In this case, the resource is food, and your dog may know what it feels like to go without. Instead of missing another meal, they will fight to consume as much as possible.

If you have more than one dog, feeding the dogs in separate areas may help slow down their eating if they feel like they don’t have to compete. They will soon learn that there is plenty of food to go around.

dog looking at the cat that is eating its food
Image Credit: Chendongshan, Shutterstock

2. Genetics

Genetics can greatly influence how dogs behave, including their appetite. Certain breeds in particular are known to have voracious appetites.

These include:

Because health issues like bloat can happen with voracious eaters, it is important to portion correctly. Sometimes, investing in slow feeders can also be beneficial.

divider dog paws oct 2024

Health Issues

Certain health issues can impact your dog’s hunger. While there can be an endless number of reasons a certain health condition might cause excessive hunger, here are the most common culprits. It’s important to see a vet if your dog’s increased appetite is sudden and you think it can be attributed to a health problem.

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 personalized advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content Savings V1

3. Diabetes mellitus

Diabetes mellitus often causes increased hunger, which is also known as polyphagia. When dogs aren’t able to produce enough insulin (the hormone that allows blood sugar to enter the body’s tissues), their body thinks it is starving and signals are given off that tell the dog to eat more.  Your dog may even be losing weight despite eating more.

Other signs of diabetes can include:
  • Excessive thirst
  • Increased urination
  • Weight loss

A dog with diabetes will be closely monitored, and treatment may vary depending on the severity of the disease and how well-controlled it has become.

labrador retriever dog lying on the floor looking sad or sick
Image Credit: Jaromir Chalabala, Shutterstock

4. Exocrine Pancreatic Insufficiency (EPI)

If your dog suffers from exocrine pancreatic insufficiency, it means that their pancreas does not produce the correct digestive enzymes to break down the food. Because it interferes with digestion, dogs with EPI often suffer from malabsorption also. This can influence appetite because the body still feels it needs nutrition even when food has been eaten.

Signs can include:
  • Weight loss
  • Loose, voluminous, greasy stools
  • Increased appetite

EPI can be the result of autoimmune destruction of the enzyme making cells of the pancreas, or it can be the result of chronic pancreatitis or a tumor within or near to the pancreas.

sick weakened puppy lies in the arms of owner
Image Credit: Gladskikh Tatiana, Shutterstock

5. Hyperadrenocorticism (Cushing’ Disease)

Cushing’s disease is caused by excess cortisol production due to a tumor in either the adrenal gland or the pituitary gland. Cortisol is known as the “stress hormone” and is released when the body is in “fight or flight” mode.  It also regulates metabolism and immune function. When cortisol increases, so too does appetite, so dogs with Cushing’s Disease are polyphagic (eat excessively).

Other symptoms of Cushing’s Disease include:
  • Increased thirst
  • Increased urination
  • Increased panting
  • Skin changes
  • More frequent infections, including skin and urine infections
  • Abdominal distention

6. Malabsorption

Malabsorption is usually a symptom of a disease process that causes a dog to feel hungry all of the time.

Underlying causes of malabsorption may be:
  • Parasites
  • Inflammatory bowel disease
  • Intestinal neoplasia
  • Small intestinal bacterial overgrowth
  • Ulcerative colitis

Treatment will depend on the underlying issue. Your vet will run a series of tests to determine the problem.

sick male beagle dog lying on the sofa
Image Credit: Przemek Iciak, Shutterstock

7. Cancer

Cancer is a devastating disease that impacts so many dogs annually. Often, symptoms go unnoticed because they are so subtle in the beginning stages. Some dogs can be very asymptomatic until the disease is quite advanced.

Cancer symptoms can vary quite drastically depending on the area of the body it affects. Cancer can cause an increase in hunger because cancer cells require a lot of energy to divide rapidly.

If your dog shows any abnormal behaviors, including these changes with hunger or digestion, it is crucial to mention it to your vet. They might want you to come in for blood panels to see if they can find an underlying cause.


8. Parasites

Parasites are very common in dogs, which is why we’ve listed this as its own reason for increased appetite. Parasite prevention is put in place for a reason.

If your dog has parasites in their system, they can quickly multiply and start to negatively affect your dog’s systems, leading to excess hunger. Parasites will rob your dog of vital nutrients so you might notice also that your pup has a little weight loss with the increased hunger.

Other signs of parasites in dogs include:
  • Loose stools
  • Vomiting
  • Weight loss
  • Distended abdomen
  • Malnutrition
  • Respiratory issues
  • Visible worms in fecal matter
  • Recurring infections

Luckily, most parasites are easy to treat with routine antiparasitic treatments. Your vet can prescribe the right one depending on what type of parasite your dog has.


9. Medications

Certain medications can impact your dog’s overall personality. One aspect that medications can affect is appetite. Many medications are known for suppressing the appetite, while others are known to enhance it.

There are medications that veterinarians may use to stimulate a dog’s appetite, for example if a dog is suffering from kidney disease and a lack of appetite as a result of it.  Some medications are used to help more generalized conditions but a side effect may be an increased appetite.

Some drugs that increase or stimulate a dog’s appetite include:
  • Mirtazapine
  • Prednisone
  • Capromorelin
  • Maropitant (an anti-nausea medication which can help a dog to feel it wants to eat)

If your dog recently got on medication and you noticed the issue happened shortly after, you can speak with the vet about the effects of the medication and how long you can expect to see the reaction.

sick-beagle-dog-lying-on-the-floor
Image Credit: Elena Loza, Shutterstock

10. Stress or Anxiety

Have you ever been extremely stressed or anxious and so you “stress eat”? The same sensation can happen to our dogs. If they are very nervous, it can impact how hungry they feel. Anxiety and stress can be pretty difficult to treat because it involves finding out why your dog is stressed and often making lifestyle changes.

If your dog is stress eating, it is important to keep meals on a regular schedule and not feed extra. Free feeding is never an option when it comes to nervous eating. Your dog will eat you out of house and home, and it can contribute to obesity and a number of other issues.

It is important to work with a vet to come up with healthy ways for your dog to alleviate stress and anxiety without developing unwanted behaviors.


11. Lack of Proper Nutrients

If your dog is having any kind of issue with digestion or the food that they’re on doesn’t give them all the nutrients they require, they may overeat in an attempt to get the nutrients they need.

Lack of proper nutrients can lead to issues like pica.

This disorder causes dogs to crave nonfood items, like:
  • Dirt
  • Clothing
  • Rocks
  • Ice

While pica itself isn’t necessarily life-threatening, it can cause a lot of very risky things, like choking and bowel obstructions.


12. Boredom

If your dog is really bored and doesn’t really have a lot to fill their day, it’s a very normal thing for them to overeat. After all, don’t we snack the most when we are bored? Always make sure that your dog is getting the appropriate amount of exercise in a day.

If you think they are not getting enough stimulation, you can work hard to provide extra entertainment around the house.

beagle dog lying on bed looking sick
Image Credit: HelgaBragina, Shutterstock

dogster paw divider

Ways to Help Hungry Dogs

When you have a hungry pup, what are some ways you can help make sure they are getting the proper amounts and not overeating? We have you covered.

Keep Up with Appropriate Vetting

If you keep up with vetting, it can tell you so much about your dog that you might not have known otherwise. Like many other animals in the animal kingdom, dogs are often very good at disguising their illnesses.

Sometimes we don’t understand there’s a problem until it’s pretty advanced. Often, pet parents that wait are faced with tough choices and expensive surgeries. It’s always best to understand when our dog’s behavior changes so we can respond appropriately.

Keep up with your dog’s anti-parasite medications so that they don’t suffer with pesky parasites stealing their nutrients.

Female vet examining sick and sad Rhodesian ridgeback dog
Image Credit; Zontica, Shutterstock

Pinpoint the Issue

If there truly is a problem with your dog and their appetite, you should make it your mission to get to the bottom of it. Your vet can give your dog blood tests, and they should be able to rule in or out any health issues that might be bubbling under the surface.

This way, you can work out ways to encourage your dog to eat healthily without the extras.

Feed Smaller Meals More Frequently

If you only feed your dog once or twice a day, this can be really problematic for certain appetites. Instead, try to feed them smaller meal portions throughout the day. That way, they’re not going so long in between meals, and you aren’t overfeeding them.

dogster paw divider

Conclusion

Now you understand a few reasons why dogs might have a heightened appetite. Remember, if you have noticed any changes, definitely mention them to your vet if you haven’t done so already.


Featured Image Credit: Masarik, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything dog

* 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 Dogster for pet parents!

Your feedback really matters.

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

Join the conversation

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

Australian Mini Goldendoodle Dog Breed: Info, Pictures, Care Guide & More

The Australian Mini Goldendoodle is a designer dog from designer dogs—the Australian Labradoodle and the Goldendoodle. Numerous dogs contribute genes to this mix,...

Are Shar Peis Good Family Dogs? Tips, Training & Compatibility

We understand why you are interested in the unique and rare Shar Pei. After all, it’s not a dog breed that you see...

How Much Water Should a Dog Drink a Day? Vet-Approved Hydration Guide

Minor slip-ups in your dog’s routine happen, but one area you can’t forget is keeping your dog’s water dish filled. While they may...

10 Best Dog Training Apps in 2025 – Reviews & Top Picks

Depending on the breed, dog training can be both fun and frustrating. Some dogs pick up training very well, while others need more...

More related

Why Do Dogs Sit by the Door? 7 Vet-Verified Possible Reasons

Does your dog have a habit of sitting by the door? If so, you might wonder exactly why they’re doing that. After all,...

Springador (Springer Spaniel & Labrador Mix): Info, Pictures, Care & More

The Springador is a hybrid breed that crosses the Springer Spaniel with the Labrador, both of which are popular and high-energy breeds. This...

Do Corgis Bark a Lot? Vet-Verified Facts & Tips to Stop It

There are two types of Corgi: Pembroke and Cardigan Corgis. The two breeds are very similar in a lot of respects, including in...

What Do Pet Stores Do With Unsold Animals? Facts & FAQ

I often see people who purchase a pet store puppy because they want to “rescue” it. By doing so, they support a system...

Keep reading

What Exotic Fruits Can Dogs Eat? 10 Vet-Verified Safe Options

Unlike cats who are obligate carnivores, dogs are omnivores. In addition to animal-based proteins, they can eat a range of vegetables and fruits, and we don’t just mean your everyday bananas and blueberries, either. Like us, dogs can indulge in...

plateful of mangoes

Canidae Dog Food Review 2025: Recalls, Pros & Cons

Review Summary   Aimed at dogs of all shapes, sizes, and ages, Canidae dog food has been around since 1996 and is one of many high-quality brands available for pets throughout the U.S.A. With its focus on sustainable and regenerative...

Dogster_Canidae Dog Food Review

Can Dogs Eat Bacon? Vet-Reviewed Health Facts & FAQ

If there’s an aroma guaranteed to get dogs drooling and gazing up at you with big, pleading eyes, it’s the smell of bacon cooking. As much as you may want to indulge your pooch, it’s wise to hold off on...

Can Dogs Eat Bacon

Can Dogs Eat Palm Oil? Vet-Verified Facts & Info

You probably don’t have a bottle of it in your pantry. However, you probably consume palm oil every day. It’s big business, with global production for 2024 estimated at 80,194 million metric tons.¹ It has become widespread in a broad...

Can Dogs Eat Palm Oil

The Honest Kitchen Dog Food Review 2025: Our Expert’s Breakdown

The Honest Kitchen was founded in 2002 and is the first pet food company to get the US Food and Drug Administration’s (FDA) seal of approval for producing human-grade dog food. Since its founding, The Honest Kitchen has been a...

DOG_SAPR_The Honest Kitchen Dog Food

Can Dogs Eat Cream Cheese? Vet-Verified Facts & Health Tips

Whether it’s breakfast, lunch, or dinner, there’s a good chance your pup is hanging out by your side when you’re eating, and they’re just hoping you’ll share. But while your pooch might want everything on your plate, that doesn’t mean...

Can Dogs Eat Cream Cheese

Can Dogs Eat Wasabi? Vet-Verified Nutrition Facts & FAQ

Wasabi is known for its strong, spicy flavor and is enjoyed for its powerful kick. Typically served as a paste, wasabi comes from the underground stem of the wasabi plant (Eutrema japonicum), which is often referred to as Japanese horseradish...

Can Dogs Eat Wasabi

10 Essential Rules for Raw Dog Food: Vet-Verified Nutrition Considerations

Raw feeding is a controversial subject among dog owners, with some advocating for and some against it. There are clear guidelines from regulating bodies such as the American Veterinary Medical Association (AMVA), the Center for Disease Control (CDC), and the...

pet bowl with raw food in between dog's paws