Flea

Indoor environments near hosts, specifically bedding, upholstery, and carpets, as well as outdoor areas with high humidity and shade.

Obligate hematophages; adults feed on the blood of mammals or birds, while larvae feed on organic debris and 'flea dirt' (adult fecal matter containing blood).

Fleas are wingless, saltatorial insects that use powerful hind legs for jumping. They exhibit holometabolous metamorphosis (egg, larva, pupa, adult).

Risks include painful, itchy bites that can lead to dermatitis, secondary infections, and the transmission of pathogens such as tapeworms or Yersinia pestis (plague). They provide no significant benefits to human ecosystems.