Siphonaptera (fleas) are a group of wingless insects that feed on blood. Fleas typically attack dogs and cats, but humans can also get bites. Flea bites may occur on your ankles, legs, waist, and ...

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In all my years of practice, I’m amazed at how hard it is still today to find fleas. A flea is an external parasite of dogs and cats. Fleas look like dark little sesame seeds, crawling around on ...