Bug Identifier
Flea
Community identification

Flea

Ctenocephalides felis (Cat Flea) or Ctenocephalides canis (Dog Flea)

Order & Family
Order: Siphonaptera, Family: Pulicidae
Size
1.5 to 3.3 mm in length
See this bug in the Encyclopedia

Natural Habitat

Found globally; adults live on the bodies of host animals (cats, dogs, wildlife, or humans); larvae reside in carpets, bedding, and floor cracks.

Diet & Feeding

Adults are obligate hematophages (blood-feeders), consuming blood from their hosts. Larvae eat organic debris, particularly adult flea feces (flea dirt).

Behavior Patterns

Fleas are wingless, laterally flattened insects that move easily through fur or clothing. They are renowned for their powerful jumping ability and undergo complete metamorphosis (egg, larva, pupa, adult).

Risks & Benefits

Risks include skin irritation, allergic dermatitis, and transmission of pathogens such as tapeworms or bacteria (e.g., Bartonella). They provide no known ecological benefits and are considered significant household and veterinary pests.