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Worms in Dog Poop: What It Means

✓ Vet-referenced✓ Sources citedUpdated 2026-10-10

Call your vet

Seeing worms in your dog's poop means an intestinal parasite infection. Roundworms look like spaghetti; tapeworm segments look like grains of rice or sesame seeds and may move. Hookworms and whipworms are usually too small to see.

See a vet now if you notice:
  • Black, tarry stool or lots of blood
  • Vomiting as well, or not eating
  • Lethargy, weakness or pale gums
  • A puppy, senior or dog with health problems
  • Possible toxin exposure (rat bait, medicines)

Possible causes

  • Roundworms: long, white, spaghetti-like worms; very common in puppies
  • Tapeworms: flat, rice-like segments around the bottom or in stool; spread by swallowing fleas
  • Hookworms and whipworms: usually invisible; detected by a fecal test

What to do

  1. Collect a fresh sample and call your vet for a fecal test and the right dewormer (not all dewormers kill all worms).
  2. Treat fleas on all pets if you see tapeworm segments.
  3. Pick up poop promptly and wash hands: roundworms and hookworms can infect people, especially children.
  4. Puppies are usually dewormed every 2 weeks from 2 weeks of age, then kept on monthly parasite prevention (CAPC).

Should I take my dog to the vet?

Tick everything that applies. This is a guide, not a diagnosis.

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Frequently asked questions

Should I be worried about worms in dog poop?

Not always. If your dog is otherwise eating, drinking and acting normally, watch for 24-48 hours and call your vet if it continues or other signs appear.

What does healthy dog poop look like?

Chocolate brown, firm but not hard, log-shaped and easy to pick up, without mucus, blood or visible worms.

More dog poop guides

Sources

General information for pet owners, not a diagnosis. If you are worried about your dog, call your vet: they know your pet's history.

Quick answer

Call your vet

Seeing worms in your dog's poop means an intestinal parasite infection. Roundworms look like spaghetti; tapeworm segments look like grains of rice or sesame seeds and may move.

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