Black-Tailed Rattlesnake
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Native to Mexico and a few southwestern U.S. states, the black-tailed rattlesnake has three subspecies.

Black-tailed rattlesnakes inhabit the American Southwest, but aren’t the same as the ornate black-tailed rattlesnake, which shares some of its range.

Crotalus molossus is a venomous pit viper species found in the southwestern United States and Mexico. Common names: black-tailed rattlesnake, green rattler, Northern black-tailed rattlesnake.

Black-tailed rattlesnakes are venomous pit vipers native to Mexico, Arizona, and New Mexico.