Adult fleas can live for about 100 days. During their lifetime the females can produce 400-500 offspring. The life cycle of a flea begins after the female flea has a blood meal. Directly after feeding she has the nutrients she needs to produce her eggs. She lays the eggs on a host where they can then fall off onto the ground, flooring, furniture, or wherever they happen to land.
Two days later the worm-like larva emerges from the egg. After about 5-15 days of feeding on organic debris or the adult’s fecal matter, they will enter into their pupal stage. The pupal stage can last days, weeks, months, or longer depending on environmental conditions.
After the pupae develop into an adult as quickly as possible they find a host to jump onto where they begin feeding in about 24-28 hours. Flea reproduction takes place indoors year-round, but outdoor reproduction is limited to warm-weather months that meet the correct humidity and temperature requirements.
Cat fleas can transmit a variety of dangerous diseases including the plague, and murine typhus. Cat fleas serve as intermediate hosts of the dog tapeworm and the rodent tapeworm which can infest humans, dogs, and cats.