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Home > Snakes > Black-tailed Rattlesnake

Black-tailed Rattlesnake

The black-tailed rattlesnake is a pit viper possessing venom glands that are larger than its cousins from the same locality. During the season of fall and spring it remains diurnal, but during the winter, the species becomes nocturnal.


Kingdom Animalia
Phylum Chordata
Class Reptilia
Order Squamata
Suborder Serpentes
Family Viperidae
Genus Crotalus
Scientific Name Crotalus molossus


Size 2.4-3.5 ft (73-106 cm)
Color Body could be black, olive, brown or yellow with an all-black tail, black band surrounding the eyes and mouth
Distribution Texas, Arizona, New Mexico, Tiburón Islands, San Estéban, Gulf of California and Oaxaca of Mexico
Habitat Desert, grassland, mountains, forested zones in high altitude
Subspecies C. m. molossusC. m. nigrescensC. m. oaxacus
Hibernation Throughout the winter
Diet Rabbits, mice, rats, lizards, and birds
Venom Fact Venomous
Mode of Reproduction Viviparous
Litter Size 4-12 eggs
Average Lifespan 15-20 years
IUCN Conservation Status Least Concern

Black-tailed Rattlesnake Pictures Gallery

Published on September 9th 2019 by under Snakes. Article was last reviewed on 7th September 2019.

3 responses to “Black-tailed Rattlesnake”

  1. staff says:

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