Crotalus enyo cerralvensis, also known as the Cerralvo rattlesnake, is a subspecies of Baja California rattlesnake, a kind of venomous pit viper, and is named after the island it is found on, Isla Cerralvo, Mexico.

[3] Adult Crotalus enyo cerralvensis range from 1.5 - 2.5 ft. Out of the species' subspecies, C. e. cerralvensis is known to have the highest head-to-body ratio as well as a specific number of scales which can be used to distinguish it from its sister subspecies.

[2][4] The Cerralvo rattlesnake is known to eat lizards, mammals and occasionally centipedes.

[2] Crotalus enyo cerralvensis are known to give birth to 2-7 young per brood - with neonates being found between July and October.

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