Two weeks of diarrhea in a dog is considered chronic and requires a vet visit to find the underlying cause, which could range from parasites, food allergies, infections, or stress to more serious issues like Inflammatory Bowel Disease (IBD) or cancer, so schedule an appointment to get a proper diagnosis and treatment plan. Your vet will likely perform tests (like a fecal exam for parasites) and may recommend a bland diet or fluids to manage symptoms while they investigate.

What if my dog has diarrhea and is not going away?

Contact your vet right away if your pup is experiencing repeated episodes of diarrhea or chronic diarrhea. If your dog is showing other symptoms as well as diarrhea they should be seen by a vet as soon as possible.

When to be concerned over dog diarrhea?

“If a pet stops eating, is lethargic, the diarrhea is black or tarry in quality, there is associated vomiting, or the diarrhea doesn't resolve in 48-72 hours then veterinary care should be sought.” Under normal conditions, water is absorbed through your dog's gastrointestinal (GI) tract to be used within the body.

What does concerning dog diarrhea look like?

Unhealthy dog poop with diarrhea looks watery, mushy, or like a puddle, often with a mucus coating, red streaks (blood), or a greasy/tarry appearance, signaling issues like infections, parasites, dietary problems, or internal bleeding; while a single episode might be diet-related, persistent or severe diarrhea (especially with blood, black, or grey stool) requires an urgent vet visit. Healthy poop is chocolate brown, firm, and moist like Play-Doh, so any drastic change warrants attention. 

What type of diarrhea is concerning in dogs?

“If a pet stops eating, is lethargic, the diarrhea is black or tarry in quality, there is associated vomiting, or the diarrhea doesn't resolve in 48-72 hours then veterinary care should be sought.”

Diarrhea in Dogs: How To Quickly Treat At Home

How to tell if diarrhea is serious?

Contact your provider if you have diarrhea with:

1. Fever.
2. Severe pain.
3. Vomiting.
4. Blood or mucus in your stool.
5. Weight loss (this can be a sign that your body's not absorbing enough nutrients).

What if my dog is pooping liquid?

Gastrointestinal Upset and Diet Changes

Food intolerance or sensitivity can also trigger excessive mucus production in the intestines, resulting in clear liquid stool. Additionally, dogs that eat something unusual—such as table scraps, spoiled food, or foreign objects—can develop digestive irritation.

What are the signs of parasites in dog stool?

Common signs may include:

• Diarrhea that may be watery, discolored, or contain mucus.
• Vomiting.
• Swollen abdomen—typically in puppies and kittens.
• Weight loss.
• Dull hair coat.
• Visible worms in the stool or vomit—roundworms resemble spaghetti, while tapeworm segments look like cucumber seeds or rice.

Should I withhold food if my dog has diarrhea?

Yes, you can often withhold food from an adult dog with mild diarrhea for 12-24 hours to let their digestive system rest, but never withhold water, as hydration is crucial; after fasting, reintroduce food with a bland diet like boiled chicken and rice in small, frequent meals, and contact your vet if diarrhea persists, your dog is a puppy, or they seem lethargic. 

Why does my dog have diarrhea but not sick?

Most commonly, diarrhoea in dogs is caused by scavenging behaviour and eating something they shouldn't or a change in diet. Other less common causes include: stress. bacterial, viral or parasitic infections of the gut.

How many days is too long for a dog to have diarrhea?

Diarrhea in dogs often resolves on its own within a couple of days, but it can last longer, with mild cases improving in 2-3 days and more severe or chronic issues persisting for weeks or months. You should call your vet if diarrhea lasts over 48-72 hours, your dog seems lethargic, stops eating, has vomiting, or if you see blood, black stool, or severe symptoms, as this could signal dehydration or a serious underlying problem. 

What is a red flag for diarrhea?

Diarrhea red flags signaling a serious issue needing medical attention include bloody or black stools, high fever, severe abdominal pain, signs of significant dehydration (like dizziness, dark urine, little urination), weight loss, nighttime diarrhea, or diarrhea lasting more than a couple of days in adults or one day in young children, potentially indicating infections, inflammatory bowel disease, or other complications.
 

Why doesn't my dog's diarrhea go away?

If your dog's diarrhea won't go away, it could be that the treatment is not appropriate for the underlying cause, or that there are multiple contributing factors, such as intestinal parasites or inflammatory bowel disease.

What do vets do for dogs with diarrhea?

Vets treat dog diarrhea with prescription meds like Metronidazole (Flagyl) for bacterial issues, Tylosin (Tylan), or sometimes Prednisone for inflammation, alongside probiotics, dewormers, bland diets (boiled chicken/rice), and fluids, but treatments vary by cause, ranging from dietary indiscretion to infections, often starting with supportive care like diet changes and probiotics before stronger meds.
 

What bacterial infections cause diarrhea in dogs?

Bacteria, like Clostridium, salmonella, and campylobacter, often lead to diarrhea as well.

How to check dog poop for parasites?

Fecal flotation: This is the most common fecal test, which involves using a special solution to help any eggs or parasites present in your dog's stool float to the surface. These can then be examined under a microscope.

What does dog poop look like with kidney disease?

In severe kidney failure, the amount of urine may actually decrease, or the pet may stop making urine altogether. Other signs as things get worse include digested blood in the stool making the stool look black and tarry, or vomiting digested blood, which looks like coffee grounds.

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