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Worms and Your Puppy

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WORMS: Worth Worrying About

Intestinal parasites, including roundworms and hookworms, can cause serious problems in puppies. Roundworms are commonly diagnosed in puppies,5 and may infect 90% of puppies under three months of age.6

Worms and Your Puppy


Intestinal parasites cause more severe disease in young puppies. Clinical signs include failure to gain weight, poor hair coat, and vomiting. Some puppies may even die from roundworm infection.

Hookworms are another intestinal parasite commonly seen in puppies. Infected puppies may develop diarrhea, anemia due to blood loss, and fail to gain weight. Hookworm infection can also result in death. Ask your veterinarian about proper deworming protocols for puppies.

You can reduce the risk of exposure to these intestinal parasites by avoiding potentially contaminated environments and promptly removing feces from the yard or other public areas. It is also important that you place your dog on a heartworm preventive, such as HEARTGARD Plus, that is labeled for the treatment and control of roundworms and hookworms.

Important Safety Information:
HEARTGARD (ivermectin) is well tolerated. All dogs should be tested for heartworm infection before starting a preventive program. Following the use of HEARTGARD, digestive and neurological side effects have rarely been reported. For more information, please visit

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5 CAPC Recommendations. Accessed October 13, 2010.
6 Schantz PM. Zoonotic ascarids and hookworms: the role for veterinarians in preventing human disease. In: Emerging Vector-Borne and Zoonotic Disease, The Compendium Suppl 2002;24(1):47-52.

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