Found in the southeastern United States, this is the largest rattlesnake species, capable of reaching lengths of up to 8 feet (2.4 meters)
Found in the southwestern United States and northern Mexico, this species can grow up to around 7 feet (2.1 meters) in length
Found in South America, this species can reach lengths of up to 6 feet (1.8 meters) and is known for its potent venom
Native to the southwestern United States and northern Mexico, this species can grow up to 5 feet (1.5 meters) in length
Found in eastern North America, this species typically reaches lengths of around 2 to 3 feet (0.6 to 0.9 meters)
Also found in North America, this species is similar in size to the Eastern Massasauga, reaching lengths of around 2 to 3 feet (0.6 to 0.9 meters)
Native to eastern North America, this species can grow up to about 4 feet (1.2 meters) in length
Found in Mexico and parts of Central America, this species can reach lengths of up to 5 feet (1.5 meters)