Which external parasite is commonly found on dogs and cats?

• A. Tick
• B. Flea
• C. Louse
• D. Mite

Answer: (B)

Fleas are the most common external parasite found on dogs and cats. They’re tiny jumping insects that live on the skin and feed on blood, and they move readily between pets and their environment. Because flea eggs fall off into bedding, carpets, and soil, infestations can persist even when you can’t see many adults, making them widespread and a frequent cause of itching and skin irritation. Fleas can also transmit tapeworms to pets, adding to their clinical importance.

Ticks, while also common and capable of transmitting diseases, aren’t as consistently present on most pets, especially indoor ones. Lice and mites can infest but are less commonly found across the general pet population and often relate to specific conditions or environments.