Diarrhea is one of the most common health problems in puppies. A new home, new food and a habit of chewing everything can all upset a young puppy’s stomach. Many cases are mild, but puppies are small and can become dehydrated quickly. Some causes, like parvovirus, are life-threatening. Knowing when to watch and when to call a vet is important.
Switching foods too quickly is a very common cause. Our article on diarrhea after switching food explains how to change food slowly.
Puppies explore with their mouths and may eat garbage, plants, toys or table scraps. Swallowed objects can also cause a blockage. Our article on signs of intestinal blockage in dogs explains what to watch for.
Worms and other parasites are very common in puppies, including:
Your vet can test a stool sample and recommend the right deworming plan.
Our article on the vaccination schedule every new pet parent needs explains how vaccines protect puppies.
Moving to a new home, travel and other changes can cause loose stools.
Bacteria like Salmonella or Campylobacter can cause diarrhea, sometimes with blood.
Blood in a puppy’s stool may look bright red or dark and tarry. It can be caused by parasites, infections, parvovirus or something they ate. Bloody diarrhea in a puppy always needs a vet. Our article on blood in your dog’s stool explains more.
Vomiting and diarrhea together can quickly lead to dehydration. This is especially concerning in puppies and can be a sign of parvovirus. See a vet right away.
Our article on when diarrhea in dogs is an emergency covers other warning signs.
If your puppy is fully vaccinated, bright, playful, eating and drinking normally, and has only mild diarrhea:
Don’t give human anti-diarrhea medicines unless your vet tells you to.
Our article on how much to feed your puppy has feeding tips by age.
Mild diarrhea often improves within a day or two. If it lasts longer, see a vet.
Slightly soft stool can be normal, but watery or frequent diarrhea isn’t.
Talk to a licensed vet 24/7, even on holidays, by chat, voice call or video call. Your first month is free with code FREEMONTH, then US $9.99/month, at NYPTeleVet.com. One membership covers up to 6 pets, and you can cancel anytime.
Our vets can’t prescribe medication, but they’ll tell you what’s likely needed and when an in-person visit is the next step.
⚠️ Disclaimer: NYP TeleVet is not a substitute for professional veterinary care. For emergencies (trouble breathing, seizures, severe bleeding, collapse), go to the nearest veterinary clinic immediately.
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