Flea

Found globally; typically lives on or near warm-blooded hosts like dogs, cats, or humans, and can be found in upholstery, carpets, and cracks in flooring.

Hematophagous; they feed exclusively on the blood of mammals and birds using piercing-sucking mouthparts.

Excellent jumpers due to specialized hind legs; they are wingless and flattened laterally to navigate through hair or feathers. They undergo complete metamorphosis (egg, larva, pupa, adult).

Risks include skin irritation, allergic dermatitis, and the transmission of diseases like plague, typhus, and tapeworms. They offer no notable benefits to human ecosystems as they are parasitic pests.