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Question How long is the life span of a flea?

Answer

30-90 Days (Average).

A drawing of a flea by microscope pioneer Robert Hooke. Micrographia: or, Some physiological descriptions of minute bodies made by magnifying glasses. With observations and inquiries thereupon, p.334. 1665. Lessing J. Rosenwald Collection, Rare Book and Special Collections Division, Library of Congress.

A flea might live a year and a half under ideal conditions. These include the right temperature, food supply, and humidity. Generally speaking, though, an adult flea only lives for 2 or 3 months. Without a host for food, a flea’s life might be as short as a few days. But with ample food supply, the adult flea will often live up to 100 days.

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