The sound that a rattlesnake makes is a buzzing sound that results from the vibrating of the segmented rattle at the end of a rattlesnake's tail. The rattle and the buzzing sound are the primary distinguishing characteristics of the rattlesnake.
The name "rattlesnake" applies to 33 species of venomous vipers. All species of rattlesnake are native to the Americas. The majority of the rattlesnake population is located in the desert regions of northern Mexico and the southwestern United States.
The average length of an adult rattlesnake is between 1.6 to 6.6 feet; however, some rattlesnakes can reach lengths of up to 8.2 feet. Of the various species, the timber rattlesnake, the prairie rattlesnake and the eastern and western diamondbacks are the most common in North America.