How Do You Know If Your Dog Has Digestive Problems? 10 Warning Signs Every Pet Parent Should Watch For

October 4, 2025 |

An upset stomach is one of the most common reasons for dogs to see their veterinarian. However, not all stomach problems in dogs are alike.

While many digestive issues appear similar, there are actually many different causes and underlying health conditions (which range from mild to very serious) that can lead to symptoms like vomiting and/or diarrhea.

Does your furry friend seem a bit off lately? Maybe they’re turning their nose up at dinner or having bathroom troubles? Your pup might be dealing with digestive issues – one of the most common health problems our canine companions face. As a dog parent, spotting these problems early can make all the difference in getting your pooch back to their tail-wagging self.

I’ve seen my fair share of doggy tummy troubles over the years, and let me tell you – it’s never fun watching your four-legged family member feel under the weather. That’s why I’ve put together this comprehensive guide to help you recognize when your dog’s digestive system isn’t working quite right.

Common Signs Your Dog Has Digestive Problems

Dogs can’t tell us when their tummy hurts, so it’s up to us to recognize the signs. Here are the most common symptoms that suggest your dog might be experiencing digestive issues:

1. Diarrhea – The Most Common Sign

Loose, watery stools are probably the most obvious indicator of digestive problems in dogs. Diarrhea can be caused by numerous things, from something as simple as a diet change to more serious conditions like infections or parasites.

What to watch for

  • Loose, watery stools
  • Increased frequency of bowel movements
  • Blood or mucus in the stool
  • Straining during bowel movements

If your dog’s diarrhea lasts more than 24 hours, it’s time to call the vet Prolonged diarrhea can lead to dehydration, which can become dangerous quickly, especially in puppies and small dogs

2. Vomiting

Another clear sign of digestive distress is vomiting. While occasional vomiting might not be cause for alarm (dogs sometimes eat grass to make themselves throw up when they have an upset stomach), frequent or persistent vomiting needs veterinary attention.

If your dog is vomiting and can’t keep water down, this is particularly concerning and requires immediate medical care. Dehydration can happen surprisingly fast in dogs that are vomiting frequently.

3. Loss of Appetite

Has your normally food-motivated pup suddenly lost interest in mealtime? A decreased appetite is often one of the first signs something isn’t right with your dog’s digestive system.

My own dog Bella once refused her favorite treats for two days straight – that’s when I knew something was definitely wrong! A trip to the vet revealed she had a mild case of gastroenteritis.

4. Abdominal Pain or Discomfort

Dogs experiencing digestive problems may show signs of abdominal pain, which can include:

  • A hunched or “prayer” position (front end down, rear end up)
  • Whining or crying when their abdomen is touched
  • Restlessness and inability to get comfortable
  • Stretching repeatedly
  • Panting excessively

Abdominal pain is always a reason to consult your veterinarian, as it can indicate anything from gas to potentially life-threatening conditions like bloat.

5. Flatulence (Gas)

While all dogs pass gas occasionally (and some breeds are more prone to it than others), excessive flatulence can indicate digestive problems. This is especially true if the increased gas coincides with other symptoms or represents a change from your dog’s normal patterns.

6. Constipation

The opposite problem of diarrhea, constipation, is when your dog has difficulty passing stools or produces very hard, dry bowel movements. You might notice your dog straining without producing much, or seeming uncomfortable when trying to defecate.

An X-ray might be necessary if your vet suspects constipation, as it can show what’s happening inside your dog’s digestive tract.

7. Weight Loss Despite Normal Eating

If your dog is eating normally but still losing weight, this could indicate a malabsorption issue – where your dog isn’t properly absorbing nutrients from their food. This can happen due to various digestive disorders, including:

  • Inflammatory bowel disease
  • Exocrine pancreatic insufficiency
  • Certain infections
  • Intestinal parasites

8. Changes in Stool Appearance

Pay attention to your dog’s poop (yes, it’s not pleasant, but it provides valuable health information!). Look for:

  • Mucus in the stool
  • Blood (either bright red or dark and tarry)
  • Unusual color (yellow, gray, black)
  • Worms or strange objects
  • Greasy appearance

Any of these changes warrant a conversation with your vet.

9. Increased Thirst and Urination

While not exclusively tied to digestive issues, increased drinking and subsequent urination can accompany some digestive problems, particularly if your dog is becoming dehydrated from vomiting or diarrhea.

10. Behavioral Changes

Sometimes, the signs of digestive discomfort in dogs manifest as behavioral changes:

  • Lethargy or decreased energy
  • Irritability
  • Hiding or seeking isolation
  • Licking lips excessively
  • Eating grass or other non-food items

Common Causes of Digestive Problems in Dogs

Understanding what might be causing your dog’s digestive issues can help you better communicate with your veterinarian. Here are some common culprits:

Dietary Indiscretion

Let’s be honest – dogs will eat just about anything they can get their mouths on! Garbage raids, counter surfing, and picking up things during walks are common causes of temporary digestive upset.

Food Allergies or Sensitivities

Dogs can develop allergies or sensitivities to ingredients in their food, most commonly to protein sources. These can cause chronic digestive issues that persist until the offending ingredient is identified and eliminated.

Sudden Diet Changes

Abruptly switching your dog’s food without a gradual transition can lead to digestive upset. Always transition to new foods over 1-2 weeks by slowly increasing the proportion of new food while decreasing the old.

Infections

Bacterial, viral, and parasitic infections can all cause digestive problems in dogs. Common culprits include:

  • Viral infections: parvovirus, distemper
  • Bacterial infections: Salmonella, E. coli, Helicobacter
  • Parasitic infections: Giardia, roundworms, hookworms, tapeworms

Stress

Just like in humans, stress can wreak havoc on a dog’s digestive system. Changes in routine, travel, boarding, or the addition of new family members (human or animal) can trigger stress-related digestive issues.

More Serious Conditions

Some digestive problems signal more serious underlying conditions:

  • Inflammatory Bowel Disease (IBD): Chronic inflammation of the digestive tract
  • Pancreatitis: Inflammation of the pancreas, often triggered by high-fat meals
  • Gastric Dilatation and Volvulus (Bloat): A life-threatening emergency where the stomach fills with gas and twists
  • Intestinal Blockages: Caused by swallowed objects that obstruct the digestive tract
  • Colitis: Inflammation of the large intestine
  • Gastrointestinal Ulcers: Sores or lesions on the stomach lining

When Should You Take Your Dog to the Vet?

Not every bout of digestive upset requires immediate veterinary attention, but certain situations should never be ignored. Seek veterinary care immediately if:

  • Your dog is vomiting frequently or can’t keep water down
  • There’s blood in the vomit or stool
  • Your dog shows signs of abdominal pain
  • Symptoms persist for more than 24-48 hours
  • Your dog is a puppy, senior, or has existing health conditions
  • You suspect your dog ate something toxic or a foreign object
  • Your dog shows signs of bloat (distended abdomen, unsuccessful attempts to vomit, restlessness)
  • Your dog appears dehydrated (sunken eyes, dry gums, loss of skin elasticity)

Remember, when in doubt, it’s always better to err on the side of caution and consult your vet.

How Are Digestive Problems Diagnosed?

When you take your dog to the vet for digestive issues, they’ll likely perform:

  1. A thorough physical examination
  2. A detailed history (bring information about symptoms, diet, and possible exposures)
  3. Diagnostic tests that may include:
    • Fecal examination for parasites
    • Blood tests to check organ function and for signs of infection
    • X-rays or ultrasound to visualize the digestive tract
    • More specialized tests if needed (endoscopy, biopsies, etc.)

Treatment Options for Canine Digestive Issues

Treatment will depend on the specific cause of your dog’s digestive problems. Common approaches include:

Dietary Management

For mild cases, your vet might recommend:

  • Temporarily feeding a bland diet (boiled chicken and rice is a common recommendation)
  • Gradually transitioning back to regular food
  • Potentially switching to a specialized diet for sensitive stomachs

Medication

Depending on the diagnosis, your vet might prescribe:

  • Anti-nausea medications
  • Antibiotics for bacterial infections
  • Dewormers for parasites
  • Anti-inflammatory drugs
  • Probiotics specifically formulated for dogs
  • Pain management medications

Fluid Therapy

If your dog is dehydrated, they may need fluids administered either intravenously at the hospital or subcutaneously (under the skin).

Surgery

In cases of obstruction, severe bloat, or certain other conditions, surgery may be necessary.

Prevention: Keeping Your Dog’s Digestive System Healthy

Preventing digestive problems is always better than treating them. Here are some strategies to keep your dog’s digestive system in top shape:

  1. Feed a high-quality, appropriate diet for your dog’s age, size, and activity level
  2. Make diet changes gradually over 1-2 weeks
  3. Keep garbage and toxic foods out of reach
  4. Stay current on parasite prevention
  5. Provide regular exercise
  6. Maintain routine veterinary check-ups
  7. Minimize stress when possible
  8. Consider probiotic supplements (consult your vet first)
  9. Don’t give table scraps, especially fatty foods
  10. Ensure clean, fresh water is always available

Final Thoughts

Digestive issues are super common in dogs, and most pups will experience at least a few episodes during their lifetime. By knowing what signs to look for and when to seek help, you can ensure your furry friend receives prompt care when needed.

I’ve learned over the years that being observant and proactive about my dogs’ digestive health has saved us both stress, money, and (most importantly) kept them healthier in the long run. Your veterinarian is your best ally in keeping your dog’s digestive system functioning properly – don’t hesitate to reach out to them with concerns.

Remember, you know your dog better than anyone. If something seems off, trust your instincts and seek professional advice. Your furry friend depends on you to be their voice when they’re not feeling their best!

how do you know if your dog has digestive problems

Underlying Health Conditions That Cause Gastrointestinal Symptoms

Diseases outside the digestive tract may cause vomiting, diarrhea, or other symptoms. Common examples include Addison’s disease (a problem with hormone production in the adrenal glands), diabetes complications, or kidney or liver problems. Treatment varies depending on the nature of the underlying condition.

What Causes Gastrointestinal Issues in Dogs?

There are dozens (maybe even hundreds) of causes of stomach/intestinal upset in dogs.

Digestive issues can present in a number of different ways, including obvious symptoms (like vomiting) or subtle changes in behavior that may be more difficult to detect. Digestive health issues may present suddenly, or be more chronic and subtle in nature.

Below we’ll cover some of the most common causes of digestive problems in dogs.

Bloat in Dogs: Signs to Watch For, What To Do

FAQ

What are signs of digestive problems in dogs?

You know your dog has gastrointestinal (GI) problems by observing signs like vomiting, diarrhea, loss of appetite, changes in stool (consistency, color, or presence of blood), abdominal pain, excessive drooling, bloating, increased flatulence, lethargy, and weight loss.

What dogs are prone to digestive problems?

Some breeds, such as Great Danes, German Shepherds, Golden Retrievers and Collies are more prone to particular digestive problems. Commonly diagnosed conditions include: Acute gastroenteritis. This is the most common cause of an ‘upset stomach’ in dogs.

How to cure digestive problems in dogs?

Dog Upset Stomach Treatment

You can feed small amounts of a bland diet, such as boiled white-meat chicken and white rice with no salt, fat, or seasonings. If your dog is having diarrhea, you can add fiber by giving canned 100% pumpkin puree or powder. Probiotics can also help relieve an upset stomach.

What are four signs of poor functioning of the digestive system?

How do I know if I have a bad digestive system? 7 Common Symptoms of Poor Digestion
  • Bloating and Gas. …
  • Heartburn and Acid Reflux. …
  • Constipation. …
  • Diarrhea. …
  • Nausea and Vomiting. …
  • Abdominal Pain and Discomfort. …
  • Food Intolerances.