Flea (specifically an engorged adult flea)

Found on various mammalian and avian hosts; common in household environments with pets.

Hematophagous (feed on the blood of mammals or birds).

Fleas are wingless parasites that move by jumping long distances. They undergo complete metamorphosis (egg, larva, pupa, adult), and adults must feed on blood before they can reproduce.

Risks: Can transmit pathogens (such as tapeworms, typhus, and bubonic plague) and cause flea allergy dermatitis or secondary infections from scratching. No ecological benefits to humans; considered a significant household and veterinary pest.