Diarrhea and Gut Problems in Pets

If your dog or cat has vomiting, diarrhea, a sensitive stomach, or changes in appetite, it could be a sign of a gastrointestinal (GI) issue. Digestive problems are some of the most common reasons pets visit the vet—and they can affect pets of any age or breed.

Common Digestive Issues in Pets

The digestive system is responsible for absorbing nutrients, fighting off harmful microbes, and maintaining a healthy gut. When something goes wrong, it can lead to symptoms like vomiting, loose stools, gas, bloating, or loss of appetite.

1. Acute Gastroenteritis

Often caused by something your pet ate (like spoiled food, table scraps, or garbage), acute gastroenteritis is an inflammation of the stomach and intestines.

Signs to watch for: sudden vomiting, diarrhea, tiredness, and possible dehydration.

2. Inflammatory Bowel Disease (IBD)

This chronic condition leads to ongoing inflammation in the intestines. It may be related to allergies, immune imbalances, or gut bacteria.

Common signs: frequent vomiting, chronic diarrhea, weight loss, or appetite changes.

3. Exocrine Pancreatic Insufficiency (EPI)

EPI is a condition where your pet’s pancreas doesn’t produce enough digestive enzymes, causing malabsorption.

Common symptoms: weight loss despite eating, large-volume soft stools, and increased hunger.

Signs Your Pet May Have a Digestive Problem

Ongoing vomiting or diarrhea

Weight loss despite a normal or increased appetite

Bad breath, flatulence, or gurgling stomach sounds

Lethargy or discomfort after eating

Blood in stool or changes in stool consistency

If your pet shows any of these signs, consult your vet for a thorough evaluation.

Managing Digestive Problems in Dogs and Cats

Treatment depends on the diagnosis, but many GI conditions respond well to a combination of dietary changes, gut-support supplements, and stress reduction.

1. Diet Makes a Big Difference

Easily digestible diets can help soothe sensitive stomachs

Hypoallergenic or limited-ingredient diets may help with food sensitivities or IBD

Low-fat diets are often used for pancreatitis or lymphangiectasia

Single-protein diets help identify and avoid food triggers

2. Support Gut Health with Probiotics and Prebiotics

Probiotics (good bacteria) and prebiotics (which feed those bacteria) help restore balance to your pet’s digestive system, especially during or after illness.

3. Manage Dehydration and Inflammation

Use vet-recommended supplements or GI protectants to firm up stools and soothe the gut. Omega-3 fatty acids may help reduce inflammation and support gut barrier function.