Western Black-Tailed Rattlesnake

The Western black-tailed rattlesnake is a resilient and intriguing species with its distinctive black-tipped tail and remarkable adaptability.

Common Name:

Scientific Name:

Crotalus molossus

Type:

Reptiles

Diet:

Carnivore

IUCN Red List Status:

Least Concern

Graphic representation of the IUCN Red Status

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A photograph of a Western black-tailed rattlesnake

General Description

The Western black-tailed rattlesnake typically measures between 75 to 100 centimeters in length, with a robust body, a triangular-shaped head, and prominent, keeled scales. Its coloration varies from olive to brown, with darker crossbands down its back that blend seamlessly into its environment. The tail, contrasted by a black and white banding right before the rattle, gives this species its name.

Diet and Habitat

This reptile lives in the arid climates of rocky hillsides and mountainous terrains at elevations from 1,000 to 2,500 meters. Its diet mainly consists of small mammals, such as mice and rabbits, which it incapacitates with a swift, venomous strike. Occasionally, it will also consume birds, lizards, and smaller snakes.

Life Expectancy

In the wild, Western black-tailed rattlesnakes have a life expectancy of up to 20 years, thanks to their solitary nature and periodic hibernation, which helps them conserve energy and survive long periods without food.

Did You Know?

Despite their fearsome reputation, Western black-tailed rattlesnakes often prefer to avoid conflict, remaining motionless or slowly sinking away, only rattling as a last resort.