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Home > Dogs > 6 Eating Problems That Can Affect Dogs: Signs & Treatment

6 Eating Problems That Can Affect Dogs: Signs & Treatment

dog not eating its food

You’re probably familiar with the most common eating disorders in humans, such as anorexia and bulimia. You might not know that dogs can also have eating disorders, but they do not have the same complex mental concerns that plague these issues in people, so we actually refer to them as eating problems. In this article, we’ll discuss six eating problems that can affect dogs and what to do if you suspect your pup has a problem.


The 6 Eating Problems That Can Affect Dogs

1. Megaesophagus

This eating disorder is a physical condition that impacts the dog’s esophagus, which is the tube that connects the mouth with the stomach. Dogs with this condition develop an abnormally large esophagus that loses the ability to transport food and water to the stomach properly. Because of this, food and water build up in the esophagus, often causing the dog to vomit or regurgitate1.

A common and severe complication of megaesophagus is aspiration pneumonia. This occurs when the dog breathes some of the trapped food or water into its lungs. Megaesophagus is an inherited condition in some breeds. Dogs can be born with megaesophagus or acquire it later in life as a side effect of another condition. Megaesophagus is relatively easy to diagnose but can be complicated to treat because of the risk of complications.

Common Signs: Regurgitation, vomiting, gagging when eating
Treatment: Medication, diet changes, feeding tube

2. Coprophagia

Coprophagia is the official term for eating poop. Dogs with this eating disorder may snack on their own or another dog’s poop. This eating disorder is tricky because it typically has a behavioral cause but can also be triggered by medical issues.

Dogs with nutritional deficiencies caused by a poor diet or digestive problems absorbing nutrients may eat poop to make up for it. Intestinal parasites are another potential cause. Any disease or medication that causes increased appetite, such as diabetes or Cushing’s syndrome, can also cause coprophagia. If medical causes are ruled out, it likely has a behavioral root, such as poor housetraining.

Common Signs: Eating poop
Treatment: Medication, diet changes, behavioral modification
Black dog vomiting
Image Credit: Mumemories, Shutterstock

3. Anorexia

In dogs, anorexia refers to a loss or decrease in appetite. Unlike humans, it is typically caused by a physical illness or ailment. Dogs may suffer from either “true” or “pseudo” anorexia. Pseudo-anorexia means that the dog still desires to eat but can’t because of some physical issue.

Dental or mouth issues, tumors, or chronic pain anywhere in the body may all cause pseudo-anorexia. True anorexia may be caused by stress or changes in the environment. More commonly, it occurs as the result of disease, nausea, cancer, loss of smell, pain, or as the side effect of certain medications. Successfully treating this eating disorder requires correctly diagnosing the underlying cause. In dogs, anorexia is a sign rather than a disease.

Common Signs: Not eating or eating less, weight loss
Treatment: Medication, diet changes, feeding tube, surgery

4. Gorging

Gorging is an eating disorder where your dog constantly tries to consume any food item it can get its mouth on, whether or not it’s hungry. They’ll eat all their dinner and ask for more. If given the chance, they’ll target your dinner. If your dog’s food and treats aren’t securely locked away, a dog with this eating disorder will overindulge to the point that they suffer from food bloat2.

Often, gorging happens due to boredom or a compulsive behavior issue. Try increasing your dog’s daily physical and mental stimulation. Medications may be required if the gorging is a true compulsive behavior, meaning the dog can’t help itself.

Common Signs: Compulsive eating, swollen stomach, vomiting, stomach pain
Treatment: Behavior modification, increased exercise, medication
Dog not eating
Image Credit: Mat Coulton, Pixabay

5. Bolting

Bolting is an eating disorder that can cause severe complications in dogs. Dogs with this condition consume their food so quickly that it isn’t chewed properly, nor does it have time to digest. You may notice your dog vomiting what looks like the whole, undigested kibble right after eating.

Large, deep-chested dogs with this eating disorder may swallow large quantities of air while bolting food. This may cause GDV or bloat, a life-threatening emergency in dogs. Slow feeders can help in decreasing bolting behavior. You can also try feeding small, frequent meals to lower your dog’s bloating risk.

Common Signs: Rapid eating, food guarding, vomiting
Treatment: Feeding small meals, switching to a slow feeder

6. Pica

Pica is an unusual eating disorder where dogs regularly consume non-food items. While dogs of any age may chew on and sometimes ingest parts of items like sticks or plastic toys, those with pica may compulsively chew or eat strange objects. This eating disorder is dangerous because the dog may eat poisonous or large items that cause a blockage in the intestines.

Pica can have behavioral and medical causes, and dogs with nutritional deficiencies may develop pica. Anxiety and boredom can also cause the disease. In rare cases, pica may be a compulsive behavior, although this is more common in cats.

Common Signs: Eating non-food items
Treatment: Increased physical and mental stimulation, medication
West Highland White Terrier dog at home eating
Image Credit: Alejandro rodriguez, Shutterstock


What to Do If You Suspect Your Dog Has an Eating Disorder

As we’ve learned, eating disorders in dogs can have medical and behavioral causes. The first step if you suspect your dog has an eating disorder is determining what is causing it. Make an appointment with your veterinarian to diagnose or rule out medical conditions first.

Keep in mind that diagnosing the medical cause of an eating disorder like anorexia can be complicated because there are so many potential culprits. Your regular veterinarian may need to run blood work and imaging or refer you to an internal medicine specialist for more advanced tests.

If medical conditions are ruled out, your vet can help you get to the bottom of your dog’s behavioral issues. Some behavior issues can be solved by simple changes like increased exercise or spending more time with your dog. Others may be more complex and require medication or the expertise of a certified dog behaviorist.



Eating disorders in dogs may not be as emotionally complex as in humans, but they can still be difficult to diagnose and treat. If your dog is suffering from any of these eating disorders, work closely with your veterinarian as you diagnose and treat them. Don’t be afraid to ask questions or seek additional help during the process. Dealing with a sick dog is an emotional situation, and you’ll want as much support as possible.

Featured Image Credit: Daria Lixovetckay, Shutterstock

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