Is this a homework question?

Hello c:

They're born, they bite a few dogs, they procreate, and then they die. A fleas life is not all it's cracked up to be.

excon

Ever hear of Google? This is what you get when you paste your question in it What is the life and life cycle of the flea, and why is flea control so difficult? (http://vetmedicine.about.com/od/parasites/f/FAQ_fleacycle.htm)