Merck Manual

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Ctenocephalides felis, female
ctenocephalides_felis_female_flea_high
Ctenocephalides felis, female

    Ctenocephalides felis (cat flea), female. Fed female fleas are twice the size of males, with a much longer abdomen (slide-mounted and cleared specimen).

Courtesy of Dr. Michael W. Dryden.

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Fleas in Dogs and Cats