Pet Health

Diarrhea in Puppies (Vet-Reviewed)

Learn about diagnosing and treating diarrhea in puppies in this vet-reviewed guide. Understand causes, symptoms, and when to seek veterinary help for your pup!
Author: Veterinary Team
Dial A Vet
Updated
June 6, 2025
|
Published
June 6, 2025
Puppy with diarrhea sitting on a vet examination table, looking concerned, next to a bowl of food and water.

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Diarrhea in puppies can be alarming for any pet owner. One moment your playful pup is bouncing around, and the next, you're dealing with messy accidents and worrying about what could be wrong. While occasional diarrhea isn't uncommon, persistent or severe symptoms can signal underlying health issues that need attention. Let's explore how to identify, manage, and prevent diarrhea in puppies.

⚠️ What to Watch For

Recognizing the signs of diarrhea in puppies is the first step to addressing the problem. While loose stools are the most obvious symptom, there are other clues to watch for that might indicate a bigger issue:

  • Frequent or urgent bowel movements
  • Watery, soft, or mucus-filled stools
  • Straining to defecate
  • Blood in the stool (red or black)
  • Vomiting
  • Lethargy or fatigue
  • Loss of appetite
  • Dehydration (e.g., dry gums, sunken eyes, or skin that doesn't bounce back when pinched)

If your puppy has mild diarrhea but seems otherwise happy and active, the issue may resolve on its own. However, if you notice additional symptoms like vomiting, blood, or dehydration, it’s time to take action.

🔍 Possible Causes

Diarrhea in puppies can result from a wide range of causes, from dietary mishaps to serious medical conditions. Here are some common culprits:

  • Dietary changes: Switching foods too quickly or introducing new treats
  • Eating inappropriate items: Garbage, spoiled food, or non-food objects
  • Parasites: Worms (e.g., roundworms, hookworms) or protozoa like Giardia
  • Infections: Bacterial, viral, or fungal infections (e.g., parvovirus, Salmonella)
  • Stress: Moving to a new home, separation anxiety, or changes in routine
  • Food intolerances: Sensitivities to certain ingredients, such as dairy or grains
  • Toxins: Ingesting harmful substances like chocolate, plants, or medications
  • Underlying health issues: Conditions like inflammatory bowel disease or liver problems

In puppies, one of the most concerning causes of diarrhea is parvovirus, a highly contagious and potentially life-threatening viral infection. If your puppy is unvaccinated or overdue for vaccines, this should be ruled out immediately by a vet.

✅ What You Can Do at Home

If your puppy's diarrhea is mild and they seem otherwise healthy, you can take steps at home to help them recover. Here's how to provide supportive care:

  • Rest their stomach: Withhold food for 12–24 hours (but never more than this) to let their digestive system settle. Ensure they have access to fresh water to prevent dehydration.
  • Offer a bland diet: After the fasting period, introduce small meals of plain boiled chicken (no skin or seasoning) and white rice. Gradually reintroduce their regular food over a few days.
  • Keep them hydrated: Puppies are more prone to dehydration than adult dogs. Offer water or an electrolyte solution (like Pedialyte diluted with water) to keep them hydrated.
  • Monitor their condition: Watch for signs of improvement or worsening symptoms. If diarrhea persists for more than 24–48 hours or other symptoms appear, consult your vet.

It's also helpful to keep a stool sample in case your vet needs to test for parasites or infections.

💡 When to Call a Vet

While mild diarrhea can often be managed at home, there are times when professional help is essential. Contact your vet if you notice any of the following:

  • Diarrhea lasting more than 24–48 hours
  • Blood in the stool (bright red or black)
  • Severe or frequent diarrhea leading to dehydration
  • Vomiting, especially if persistent
  • Fever or lethargy
  • Your puppy is under 12 weeks old or unvaccinated
  • Signs of pain, such as whining or a hunched posture

According to VCA Animal Hospitals, puppies with severe diarrhea are at high risk of dehydration and other complications, so seeking timely veterinary care is crucial (source).

If you're unsure whether your puppy's condition warrants a visit, you can book a $49 online consultation with Dial A Vet for immediate advice from a licensed veterinarian.

FAQs

Q: Can I give my puppy over-the-counter diarrhea medicine?
A: No, human medications like Imodium can be dangerous for puppies. Always consult your vet before giving any medication.

Q: How do I know if my puppy is dehydrated?
A: Check for signs like dry gums, a loss of skin elasticity, or lethargy. If you're concerned, consult your vet immediately.

Book a $49 online vet consultation at https://www.dialavet.com for fast, expert advice.

References

While every effort is made to ensure the accuracy of this content - including vet review where applicable - this article is for informational purposes only and is not a substitute for professional veterinary advice, diagnosis, or treatment. If your pet is unwell or you are concerned, please speak with a licensed veterinarian. You can book a $49 online consultation with our veterinary team  😄
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