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Which of the following diseases is caused by a fungus?

  1. Hookworm

  2. Ringworm

  3. Heartworm

  4. Salmonella

The correct answer is: Ringworm

Ringworm is caused by a fungus, specifically dermatophytes, which are a group of fungi that infect the skin, hair, and nails. This condition is characterized by circular patches of hair loss, redness, and inflammation. It is important to note that despite the name "ringworm," it is not a worm but a fungal infection, which can affect various animals, including cats, dogs, and humans. In contrast, hookworms and heartworms are parasitic infections caused by different types of worms. Hookworms are related to nematodes and typically infect the intestines, while heartworms are a type of roundworm that primarily infects the heart and lungs of dogs and cats. Salmonella, on the other hand, is a type of bacteria that causes gastrointestinal illness rather than being associated with fungal infections. Understanding these distinctions is vital for proper diagnosis and treatment in veterinary medicine.