Signs of intestinal worms

Learn what the signs of hookworm, roundworm, tapeworm and whipworm are so you can recognize if your dog becomes infected.

The signs to look out for

Hookworms, roundworms and whipworms live in your dog’s body and grow into adulthood in the intestinal tract. That’s why broad-spectrum protection is important to help keep your dog healthy.

If your dog has intestinal worms, the parasitic infection could cause:1,2,3,4

  • Weight loss
  • Diarrhea
  • Anemia
  • Blood loss
  • Coughing
  • Even death, if left untreated

Spotting tapeworm in dogs

You won’t always be aware if your pet has a form of tapeworm as there may not be any obvious changes in behavior. However, you might notice the following signs:5

  • Excessive cleaning of anus
  • Scooting
  • Gastrointestinal upset
  • Skin irritation near the anus
  • Small segments (proglotids) being excreted in the dog's stool

You might be interested in…

Want to keep reading? Learn more about worms by exploring the articles below.

Signs of heartworm disease

Do you know the signs of heartworm disease? Learn what to look out for.

How does a dog get worms?

See where your dog is most at-risk of contracting different worm types.

Interceptor® Plus (milbemycin oxime/praziquantel) worm protection

Find out how monthly Interceptor Plus provides effective, year-round protection against worms.


Interceptor Plus prevents heartworm disease and treats and controls adult roundworm, hookworm, whipworm, and tapeworm infections in dogs and puppies 6 weeks or older and 2 pounds or greater.

Important Safety Information

Treatment with fewer than 6 monthly doses after the last exposure to mosquitoes may not provide complete heartworm prevention. Prior to administration of Interceptor Plus, dogs should be tested for existing heartworm infections. The safety of Interceptor Plus has not been evaluated in dogs used for breeding or in lactating females. The following adverse reactions have been reported in dogs after administration of milbemycin oxime or praziquantel: vomiting, diarrhea, decreased activity, incoordination, weight loss, convulsions, weakness, and salivation. For complete safety information, please see Interceptor Plus product label or ask your veterinarian.

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