5 types of dangerous worms in dogs

Heartworms, hookworms, roundworms, whipworms and tapeworms can pose a health risk to your dog. Learn more about the different types of worms so you can protect your dog from these dangerous parasites.

About worms

Heartworms, hookworms, roundworms, whipworms and tapeworms live in your dog’s body and grow to adulthood in their intestinal tract or heart.


Roundworms can be found in the stools of infected dogs and cats and in the soil anywhere around. They mature into adults in the intestines of dogs. Want to learn more about roundworm?


Hookworms bury into the skin of dogs and move through internal organs before maturing into adults in the intestine. Want to learn more about hookworm?


Whipworm eggs are passed in stools and ingested by dogs. Larvae hatch from the eggs in the intestines and then mature into adults in the large intestine. Want to learn more about whipworm?


Tapeworm is spread through ingesting infected animals and fleas. Want to learn more about tapeworm?


Heartworms are spread by mosquito bites and develop into adults in the hearts and lungs of dogs. Want to learn more about heartworm?

You might be interested in…

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

Heartworm lifecycle

Learn how your dog gets infected with heartworms and how they develop in the body.

Signs of intestinal worms

Would you know what to look out for? Read up on the signs of intestinal worms.

Roundworm lifecycle

Learn more about the roundworm lifecycle.


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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