Flea Reproduction and Life Cycle
Female fleas require blood meals to lay their eggs and can consume up to 15 times their body weight in blood every day. Fleas lay eggs after every blood meal. Some species lay only 4 to 8 eggs, while other species may lay up to 25. Most fleas lay several hundred eggs in their lifetimes.
Mature female fleas usually lay eggs directly on a host they are actively feeding on. These eggs aren’t attached to the host, however, and generally fall off and continue to incubate on the ground or in the host’s home. If a pet has fleas, for instance, there are probably flea eggs in its bedding.
A flea’s life cycle is broken into four distinct developmental stages: egg, larva, pupa, and adult. Life cycle development depends on temperature and food availability and could take anywhere between a month to 200 days or more. Adult fleas may live for a year or longer.
Fleas are usually a problem in summer but if they get inside, they can continue their reproductive cycle all year. Once an infestation begins, winter won’t stop it.