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 Not Eating? 9 Vet-Verified Reasons & What to Do

Share

Beagle dog lying down waiting for owner with sad face

The role of every dog owner is to do everything it takes to keep their puppy happy and healthy. So, it’s understandable that many owners panic when their dog displays unusual behavior. When your dog suddenly stops wanting food as much or stops eating altogether, it may cause you some stress.

If you are interested in the reasons why your dog might stop eating, stick with us for some useful information.

dogster face divider

The 9 Possible Reasons Your Dog Is Not Eating

1. Your Dog Doesn’t Like the Food

We all want to give our dogs the best, but sometimes, dogs can become spoiled and picky when it comes to their food. So, if they stop eating suddenly, this just might be a sign they don’t like the food you gave them.

You should check the expiration date and see if the food is still usable. If it isn’t usable, you shouldn’t give it to your dog because it can potentially cause health problems.

This can also happen when you introduce a new type of food to your dog; if they don’t like the smell or the taste, they may refuse to eat it.

Maltipoo dog near feeding bowl with dry food on floor in kitchen
Image Credit: New Africa, Shutterstock

2. Overfeeding

If your dog is not hungry, they won’t eat. If your dog’s body condition score is on the heavier side, you may be offering them too much food every day. These dogs will often eat tastier food if offered to them, but it’s important not to do this as it will create unhealthy eating habits. Being overweight can increase the risk of health problems like joint disease and even some cancers. If you’re not sure how much your dog should eat, check the feeding guide on your dog food packaging and talk to your veterinarian.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's our 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. Eating at a Particular Time of Day

As we all know, dogs are intelligent animals, and they can quickly form habits. In this case, they can get used to being fed in a particular part of the day and refuse to eat during the other periods. For example, if your dog likes to eat at night, they may refuse food in the morning. While most dogs will chow down whenever they get the chance, this may be the reason your dog’s not eating.

Shih tzu dog getting food from owner at kitchen
Image Credit: chaossart, Shutterstock

4. Stress

Like humans, many life changes can affect your dog and their appetite. For instance, moving can be very stressful for your dog, resulting in your dog not eating. It is common for the dog to refuse to eat when their owner is away from home as well.


5. Your Dog Feels Threatened

Introducing new animals can also cause your dog to stop eating because they might feel threatened by the new animal or prefer to be alone. Either way, introduce the new pet slowly, and they will learn to coexist over time. Also, it would help if you feed them in separate rooms because one can be intimidated by another’s presence and won’t eat—they will simply guard the food instead.

Scared chihuahua under a couch
Image Credit: p.s.stasya, Shutterstock

6. Age

Age can also be a significant factor in why your dog isn’t eating or is eating less. Naturally, young bodies that are still developing need more nutrients from food to develop properly. So, when you get a new puppy, you are shocked at how much food can fit in their little stomach. On the other hand, what happens a lot with senior dogs is that they start to eat less at a certain age in response to lower calorie requirements.


7. Medication

A significant factor to consider in why your dog stopped eating is that many medications can affect your dog’s appetite. All medications have side effects, and some side effects mean additional treatment is needed. The lack of appetite could also mean your dog’s original illness getting worse. If you’re concerned about any side effects of medication, call your veterinarian for recommendations on what to do.

dog dewormer
Image Credit: Ilike, Shutterstock

8. Dental Problems

The reason why your dog isn’t eating might also be because they have dental problems. If you notice that your dog wants to eat but is spitting out their food or drooling, it may mean that they are in pain. They might have a broken tooth or an infection that causes pain and loss of appetite.


9. Illnesses

These are some illnesses that can lead to loss of appetite in dogs:

  • Infections and fevers
  • Gastrointestinal problems
  • Liver problems
  • Kidney problems
  • Pancreatitis

When the liver or kidneys are diseased, toxins can build up in the body, making dogs nauseous. Many of the above problems cause pain, nausea, or lethargy which reduce a dog’s appetite. Pancreatitis is an inflammatory disease of the pancreas that can also cause loss of appetite because it is very painful.

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

Dogster_Website dividers_v1_Jan 18 2024-01-TEST

How to Help Your Dog

Depending on the cause of the problem, it may be a simple solution to help your pooch get their appetite back. Eating less and not eating at all are two very different things, so you should take things more seriously if your dog hasn’t eaten anything in 24 hours.

First and foremost, look for other signs your dog might be unwell like vomiting, retching, diarrhea, lethargy, increased or decreased thirst, urinating more, bad breath, and pawing at the mouth. If they show any other signs or they don’t start eating well soon, contact your veterinarian.

If your dog doesn’t want to eat because they don’t like the taste of the new formula you gave them, you should return to the old, reliable food. When changing the diet you should do so gradually to avoid gastrointestinal upset. You can also try to mix the fresh food with the old one, and you can also try to soften it by mixing it with water to make it more appealing and easier for them to chew.

If your dog is stressed because of some significant changes at home, try to calm them by spending more time with them and reducing their source of stress as much as possible. Playtime is an excellent way of solving these problems and a great way to bond with your dog.

Dogster divider_v3_NEW_MAY_24_

Conclusion

Even though this can be a very stressful situation for every dog owner, you should stay calm and look for any other changes in your dog that can solve the problem—dogs often stop eating because they are stressed or simply being picky. On the other hand, there are instances where some health issues cause a loss of appetite.

Either way, we hope we helped you understand why this is happening, but if you still have doubts, you should contact your veterinarian for a check-up.


Featured Image Credit: N_T, 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

Ask Dr. Paola- Help! My Dog’s Sleeping Habits Have Changed! (May 18, 2026)

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

The Crate Setup Most Dog Owners Get Wrong (And How To Fix It!)

Most people assume that if their dog hates the crate, the crate is the problem. So they try a bigger one, a different...

1,500 Beagles Rescued from Wisconsin Lab Farm – Here’s Where They’re Going

You may remember that a few weeks ago, we reported on a tense situation at Ridglan Farms, Wisconsin, a facility infamous for housing...

Dogster’s Weekly Photo Contest Winners: Window Watchers (May 11, 2026)

Every week our team gets the privilege of sorting through our readers photos to choose what dogs will win this weeks contest! See...

More related

My Dog Ate Play-Doh: Should I Be Worried? (Vet Answer)

Kids and dogs are often attached at the hip; where one goes, the other follows. Since kids love to share their food with...

Is Vinegar Safe for Dogs When Used for Cleaning? Vet-Verified Facts & Benefits

Keeping the house clean is an ongoing task when you’re an adult. But when you also own a dog, you know how much...

9 Best Tile Floor Cleaners for Dog Urine in 2026 – Reviews & Top Picks

Dogs can have accidents from time to time. While it might seem simple to wipe up dog pee from tile floors, you want...

Vets Reveal Top Dog Food Allergens to Watch Out For

Is your dog constantly scratching, dealing with tummy trouble, or battling ear infections? You’re not alone, and food could be part of the...

Keep reading

Can Dogs Eat Lychee? Vet-Reviewed Nutrition Facts & FAQ

If you like consuming lychees and are a dog parent, you may be wondering if it’s safe for your dog to eat lychee too. So can dogs eat lychee? While dogs should typically stick to regular dog food, giving a...

Can Dogs Eat Lychee

Can Dogs Eat Dried Apricots? Vet-Verified Nutrition Facts & Info

Our dogs are omnivorous creatures—just like us. That means they could enjoy a wide selection of meat, fruits, veggies, and grains! If you’ve been looking for a few different options, other than boring dog treats to get your dog’s appetite...

Dogster-Can-Dogs-Eat-Dried Apricot

Orijen Puppy Food Review 2026: Pros, Cons, Recalls, and FAQ

Review Summary Are you looking for high-quality food to feed your new puppy? If so, you may have heard of Orijen Puppy Food. This brand is a popular choice for many pet owners, but it’s not without its controversies. In...

Dogster_Orijen Puppy Food Review

When Can a Puppy Eat Dry Food Without Water? Vet Approved Feeding Guide

So, you’ve added water to your pup’s dry food to soften it. Or maybe you’re just feeding your puppy wet food. That’s great! Puppies need moist, soft food while their teeth develop. But the time is slowly creeping up to...

When Can a Puppy Eat Dry Food Without Water

Pro Pac Dog Food vs Blue Buffalo: What to Choose in 2026, Pros & Cons

Choosing the right food for your beloved canine companion can be a real headache! In fact, it’s normal to feel a bit overwhelmed by the myriad options available in the dog food market. How do you choose a good diet...

Dogster_Dog Food Pro Pac VS Blue Buffalo

7 Best Dog Foods for West Highland White Terriers in 2026 – Reviews & Top Picks

The West Highland Terrier is a breed of dog beloved by many. If you’re lucky enough to be a pet parent to one of these pups, you know just how quirky they can be. You also know just how important...

West Highland White Terrier dog on green grass

Can Dogs Eat Fish? Vet-Verified Facts & FAQ

Though fish is most commonly associated with cats, many dogs love it, too. If your dog goes bonkers for a fishy treat, they’re in luck—in most cases, dogs can safely eat certain types of fish as long as they’re prepared...

Can Dogs Eat_Fish

Stock Up, Look Sharp, and Save While You Shop at PetSmart

When it comes to caring for our dogs, certain things simply come with the territory, like feeding, exercising, training, and grooming. We don’t expect to be paid for these responsibilities – a happy, healthy dog is its own reward! But...

PetSmart Grooming

Love Dogs? So Do We! Join the Dogster 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 Dogster Email Newsletter