Flea

Natural Habitat

Found worldwide, primarily living as external parasites on mammals (dogs, cats, humans) and birds. They often reside in bedding, carpets, and upholstery when not on a host.

Diet & Feeding

Hematophagous (blood-feeding); adults feed exclusively on the blood of their hosts. Larvae feed on organic debris, including the dried feces of adult fleas.

Behavior Patterns

Fleas are wingless but have powerful hind legs adapted for jumping great distances relative to their size. They are attracted to body heat, movement, and carbon dioxide exhaled by potential hosts. They undergo complete metamorphosis (egg, larva, pupa, adult).

Risks & Benefits

Risks: Their bites cause itching, irritation, and allergic dermatitis. They can be vectors for diseases such as bubonic plague, murine typhus, and can transmit tapeworms to pets. Benefits: Little to no direct benefit to humans or domestic animals, though they are a food source for some predators.

Identified on: 2/27/2026