Steve Grenard is an avid herpetologist with more than forty years of experience with amphibians and reptiles; he published a paper on the reproduction of the Marsupial Frog in 1958. In the summer of 2000, he published a controversial and widely debated review in Natural History Magazine on the possibility of American rattlesnake venoms evolving new properties. He is the author of several Howell Book House titles, including: Your Happy Healthy Pet: Frogs and Toads, An Owner’s Guide to a Happy Healthy Pet: Lizard and Amphibians: Their Care and Keeping. He is also the author of a number of scholarly medical and herpetological books, including Medical Herpetology and Handbook of Alligators and Crocodiles, and is the author of Introduction to Respiratory Care, a best-selling text review of respiratory therapy. Steve is a board-certified respiratory therapist and polysomnographer and is the clinical coordinator of the Institute of Sleep Medicine at Staten Island University Hospital in Staten Island, New York.