Fleas undergo complete metamorphosis from egg to larva to pupa to adult. Common flea species include cat fleas, dog fleas, human fleas, chigoe fleas, sticktight fleas, oriental rat fleas, and rabbit fleas. Fleas can cause harm through flea allergy dermatitis, tungiasis, and by transmitting diseases as plague vectors. Controlling fleas involves treating pets with soaps, combs, and flea control products from veterinarians as well as limiting outdoor time and contact with wild animals.