Flea, the common name for the order Siphonaptera, includes 2,500 species of small flightless insects that live as external parasites of mammals and birds. Fleas live by ingesting the blood of their hosts.

May 15, 2024 · Fleas are small insects that survive by feeding on animal or human blood. Their bites can cause discomfort, itchiness, and irritation. Sometimes, fleas can infect people or pets with the …

Nov 16, 2025 · Flea, any of a group of bloodsucking insects that are important carriers of disease and can be serious pests. Fleas are parasites that live on the exterior of the host.

Aug 31, 2021 · Fleas are tiny, wingless insects. They are dark brown or black and have flat bodies. They have six legs, strong claws on the bottoms of their legs that allow them to hold onto a host and …

Aug 28, 2025 · Found fleas in your home? Here’s how to get rid of a flea infestation, according to a vet.

Jan 7, 2025 · Where do fleas come from? Simply put, Cohen said fleas are a regular occurrence in the environment. Associate Professor of Entomology at the University of Kentucky Jonathan Larson …

Dec 18, 2025 · Fleas are a nuisance and a health risk for you and your pets. Learn about fleas and how to get rid of them.

May 2, 2025 · If left untreated, a flea infestation can stick around indefinitely. Here's how to get rid of fleas in your home, yard, and on your pet.

Oct 24, 2025 · Fleas are a constant annoyance for cat and dog owners; several billion dollars are spent every year worldwide on flea and tick treatments. While their bites generally cause nothing more than …

Learn about fleas and get information on flea control and extermination. The pest control experts at PestWorld.org explain how to identify a flea infestation.