Wingless insects whose mouthparts are adapted for piercing skin and sucking blood.
Fleas are external parasites, living off the blood of mammals (including humans) and birds
When the flea reaches adulthood its primary goal is to find blood. They must feed on blood in order to reproduce. Adult fleas only have approximately a week to find food once they emerge, though they can survive two months to a year between meals. Their total life cycle can take as little as two weeks, but may be lengthened to many months if conditions are favorable.
Female fleas can lay 500 or more eggs over their life. Eggs are not attached to the host but will hatch on the ground, carpet, bedding, upholstery or cracks and crevices in floors. Most eggs will hatch within seven to fourteen days.