rattlesnake

Example:In zoology, crotalus is a classification term for rattlesnakes and other similar species.

Definition:A genus of pit vipers, including the rattlesnakes, found in the Americas.

Example:Some vipers, including rattlesnakes, are admired for their remarkable defensive mechanisms.

Definition:A venomous snake typically venomous as well as having a pair of elliptical heat-sensing pits between the nostril and eye.