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Worms in Dogs

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Canine worms can cause a variety of health problems in dogs. Here you’ll find a brief description of the most common types of worms in dogs, with links to in-depth articles on how these worms can infect your dog and what you can do to prevent and treat them.

Roundworms

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Usually spread in feces or during pregnancy or nursing, the roundworm causes a serious infection in dogs and puppies. The roundworm eats the food of its host and may cause diarrhea and other symptoms. In puppies, roundworms can be fatal. Prescription and over-the-counter deworming products for dogs are very effective. If people contract roundworms, their symptoms can be even more serious than those in dogs. Read the full article.

Hookworms

Living mainly in the small intestine, hookworms suck the blood of their hosts. Puppies can become infected from their mothers. Adult dogs can be infected through their skin or when cleaning themselves. Infection causes weakness and malnutrition and can lead to death in puppies. Two rounds of deworming medication are usually effective, but a puppy may need other treatment, as well.  Humans can also become infected with hookworms from unwashed vegetables or by walking barefoot on sand and soil. Read the full article.

Heartworms

Heartworms are spread to dogs through mosquito bites. Up to 14 inches long, a heartworm lives in the heart and the arteries that carry blood from the heart to the lungs. Heartworms affect how the heart functions and how blood clots and is likely to cause death if untreated. Monthly heartworm preventives are effective. If infected, your dog may cough, have trouble breathing, and experience other symptoms. Treatment may involve two or three injections of arsenic-based drugs, followed by at least a month of rest. Read the full article.

Whipworms

Whipworms live in the area where the small and large intestines meet. Here, they suck the blood of their hosts. Dogs can pick them up from contaminated soil or by grooming. Whipworms do not cause serious blood loss or other serious symptoms unless large numbers embed in the intestine. Some heartworm preventives are effective against whipworms, and an oral dewormer is effective at eliminating whipworms. Read the full article.

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