Flea & Tick Life Cycle

Fleas don't just make your cat or dog itchy. They keep biting and hurting again and again. Pet owners often don’t even know that their pet has a flea problem until it gets severe. Understanding the flea life cycle is important when you are trying to rid them from your pet and home.
Flea Life Cycle


When an infected parasite (such as a tick, flea or mosquito) bites and feeds on the blood of a pet, it can pass diseases from itself to the new host. Ticks are especially competent at passing disease because they feed on several hosts, molt through different life stages, require large blood meals, and feed for long periods of time.  They are more than just an unsettling nuisance; they are capable of transmitting diseases such as Lyme disease, Rocky Mountain spotted fever and ehrlichiosis.

tick life cycle



1. Grace SF. Fleas. In: Norsworthy GD, Crystal MA, Grace SF, et al., eds. (2006). The Feline Patient. 3rd ed. Ames, IA: Blackwell Publishing; 106-107.

2. Dryden MW, Payne P, Zurek L. (2003). Pests That Affect Human Health: Fleas Infesting Pets and Homes. Manhattan, KS: Kansas State University Agricultural Experiment Station and Cooperative Extension Service. MF-760.

Related articles:
Flea, Tick & Mosquito Seasonality & Geography
Flea Diseases in Dogs
Tick Diseases in Dogs
How to Help Get Rid of Fleas & Ticks in Your Yard

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