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

We Didn’t Just Add a Dog to Our Life – We Built a Life With Him

“We didn’t just bring a dog home—we built a life together.” Most people are quietly taught a version of pet ownership that looks...

What Most Airlines Won’t Let You Do With Your Dog (Even If You Pay Extra)

Airline pet policies are notoriously hard to navigate. The information is scattered across different pages, buried in FAQ sections, and often contradicts what...

Designer Breeds: Best of Both? New Study Says No

“I’ll take a highly trainable, low-shedding lapdog, hold the heart disease and anxiety!” Something I always found amusing was when people would point...

Ask Dr. Paola- Help! My Dogs Erection Gets Stuck! (April 6, 2026)

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

More related

Safe Paw Ice Melter Review 2026: A Pet-Friendly Way to De-Ice

Icy sidewalks and excited dogs do not mix. Another thing that typically doesn’t go well together? Pets and ice melt products. Even products...

Acupuncture for Dogs: Pros, Cons, Benefits & Risks (Vet Answer)

The therapeutic benefits of acupuncture are becoming more widely recognized and incorporated into mainstream medical treatment plans, a move that many would say...

Parti Labradoodle: Info, Pictures, History & Origin

A Parti Labradoodle is much like any other Labradoodle. However, it has a parti-color coat pattern, which is a coat that’s mostly white...

350+ Cute Dog Names for Your Adorable New Pup

So, you’ve found the cutest dog in the world, and you’re pretty sure you’ll be best friends for life. All you need to...

Keep reading

Can Dogs Eat Sprinkles? Vet-Verified Nutrition Facts, Risks & Alternatives

Having parties and celebrations for dogs has become more common in recent years. While there’s absolutely no problem with planning parties for your dog, it’s important to provide dog-safe food and snacks. A common treat present at parties is sprinkles....

Dogster-Can-Dogs-Eat-Sprinkles

Pooch Perks Dog Food Subscription Review 2026: Our Expert’s Opinion

Review Summary What Is Pooch Perks? How Does It Work? Pooch Perks is a subscription dog box service that delivers dog toys, treats, and accessories directly to your home. You’ll receive themed boxes that change every month, and each box...

Pooch Perks Dog Subscription Box

Petaluma Dog Food Review 2026: Our Expert’s Opinion

Petaluma is changing the pet food industry by producing 100% vegan dog food that also contains high-quality ingredients. This Oakland-based company is mission-driven and works diligently towards building a more environmentally friendly and sustainable model for pet food production. Petaluma...

Dogster_Petaluma Dog Food Review

5 Herbs That Are Good for Dogs: Vet-Verified Safety & Benefits

Adding herbs and spices to our meals not only enhances the flavor, but many of them also have various health advantages. So, if we can benefit from specific herbs, maybe our dogs can too? This is broadly true, but it’s...

Bowl of basil on wooden background

Blue Buffalo vs Purina Pro Plan Dog Food: 2026 Comparison

Both Blue Buffalo and Purina Pro Plan are well-known brands that sell a wide variety of dog food. At a quick glance, both brands look very similar. However, a closer examination will reveal several key differences between these brands. It’s...

Dogster_Dogster_Dog Food Blue Buffalo VS Purina Pro PlanDog Food Blue Buffalo VS Purina Pro Plan

Can Dogs Eat Salt? Vet-Verified Facts, Risks & FAQ

Salt is a pantry staple, used to cook with, season with, and preserve. Some people can’t enjoy a meal without adding an extra dusting of salt, especially to meaty dishes like steaks, stews, chips, or eggs. It may make you...

Can Dogs Eat Salt

Can Dogs Eat Sunchips? Vet-Verified Nutrition Facts & Alternatives

For many people, it’s hard to resist cravings for junk food. We often ignore the unfavorable health effects of these tempting treats, whether a bag of Cheetos at midnight or Sunchips while watching a game. But what about our furry...

Can Dogs Eat Sunchips

Hill’s Science Diet vs Blue Buffalo Dog Food: 2026 Comparison, Pros & Cons

Dog food can seem like a never-ending brigade of decisions. There are endless dog food brands available, and each brand produces dozens of recipes. On the shelf, it can be challenging to discern which dog foods are worth buying. We...

Dogster_Dog Food Hill’s Science Diet VS Blue Buffalo

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