In puppies, skin penetration poses an additional risk, as the larvae first migrate to the lungs, where they are then coughed up and swallowed. Dogs can ingest the larvae from the environment, or in some cases, can become infected after lying in infected dirt, as the larvae can penetrate the skin and migrate through the body to the intestines. Hookworm eggs pass through the feces of infected dogs into the environment, where they hatch in warm, moist soil. Sometimes, dermatitis can result in a dog’s paws from migrating hookworm larvae.ĭogs often contract hookworms as puppies, either through their mother’s milk or contact with infected environments. However, these dogs do pose a potential threat for puppies, as they can introduce hookworm into the puppy’s environment. Healthy adult dogs do not always show signs of hookworms. In severe cases, it can even lead to lung damage and pneumonia. Hookworms also lead to overall weakness and loss in condition. It leads to a dark, bloody stool called melena, which occurs when the digested blood passes through the gastrointestinal tract. Hookworms attach to the intestinal wall, and heavy parasite loads can lead to potentially fatal anemia as well as ulceration at the feeding sites. Hookworms are especially dangerous for young puppies and can have long-term effects on their growth. Symptoms of hookworms are most commonly seen in puppies, although hookworms can affect adult dogs as well.
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