Top 5 Causes for Diarrhea in Dogs
Top 5 Causes of Diarrhea in Dogs & How to Help
Diarrhea is one of the most common digestive issues seen in dogs and can range from mild and temporary to severe and life-threatening. Occasional loose stool may resolve quickly, but persistent diarrhea should never be ignored. Below are the five most frequent causes of diarrhea in dogs, plus steps you can take to support your pup’s digestive health.
1. Dietary Changes and Food Intolerance
Abruptly switching your dog's food or introducing new treats can upset their gut microbiome and cause loose stool. Some dogs also have food intolerances to ingredients like chicken, beef, grains, or dairy. To prevent this, always transition to a new diet gradually over 7–10 days and work with your veterinarian to identify potential sensitivities.
2. Ingestion of Inappropriate Substances
Dogs are natural scavengers. Eating garbage, spoiled food, household chemicals, or foreign objects can irritate the gastrointestinal tract and even cause blockages. Severe cases may require immediate veterinary care to prevent dehydration or intestinal perforation.
3. Bacterial or Viral Infections
Pathogens like Salmonella, Campylobacter, and E. coli can cause infectious diarrhea. Viral illnesses such as parvovirus and distemper are particularly dangerous, especially in puppies. Keep your dog’s vaccinations up to date and practice good hygiene to minimize risk.
4. Parasites
Intestinal worms (roundworms, hookworms, whipworms) and protozoa like Giardia are common causes of diarrhea. Symptoms may include weight loss, poor coat condition, or a bloated belly. Routine fecal exams and deworming are crucial for keeping parasites under control.
5. Stress and Anxiety
Changes in routine, boarding, travel, thunderstorms, or loud noises can trigger stress-induced diarrhea in sensitive dogs. Providing a predictable environment, mental stimulation, and natural calming supplements can help your pup stay balanced during stressful events.
Supporting Digestive Health Naturally
- Provide consistent nutrition with high-quality dog food.
- Ensure access to fresh, clean water to prevent dehydration.
- Use Hemp Well® Relief Plus or Relief Soft Chews to help support a healthy inflammatory response in the gut.
- Introduce a dog-specific probiotic to maintain a healthy microbiome.
- Manage stress with Calm Dog Soft Chews during travel, fireworks, or transitions.
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While mild diarrhea may resolve in 24–48 hours, consult a veterinarian if it is persistent, bloody, accompanied by vomiting, lethargy, or if your dog is very young, elderly, or immune-compromised. Quick action can prevent dehydration and detect more serious underlying conditions early.
Related Resources
- What Can You Give a Dog for Pain Over the Counter?
- How to Know if Your Dog is in Pain
- 5 Ways to Calm Down a Hyper Dog
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Author bio: Hemp Well’s editorial team writes pet wellness articles using Hemp Well product knowledge, label directions, customer questions, and responsible hemp education.
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Veterinary note: This article is educational and is not a substitute for diagnosis, treatment, or advice from your veterinarian. Veterinary credentials are listed only when a specific veterinary reviewer is named.
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