Rattlesnakes in Texas and across the United States of America have been active since early spring. Rattlers are not only, (usually) easy to spot, they're also, (usually), kind enough to give you a heads up that they're there. The baby ones and we're about to see tons of them because August - October is rattlesnake birthing season. Baby rattlesnakes are born ready to rock, complete with fangs and loaded with venom. They can also be ID'd by the heat seeking "pits" between the eyes and nose and their elliptical, (vertical), pupils.