Geographical Range Southwestern United States and northern Mexico
Habitat Forests and woodlands in mountain areas
Scientific Name Crotalus willardi
Conservation Status Not listed by IUCN

This rattlesnake gets its name from the sharp ridge running from each eye to the snout, caused by the upturning of the edges of its scales. It's a mountain dweller that lives in several different habitats, ranging from pine-oak woodlands to pine-fir forests.

Like all rattlesnakes, ridgenosed rattlesnakes have a rattle that they shake to warn potential attackers. Many snakes that don't have true rattles vibrate their tail against leaves to produce a rattling sound as a warning. It's thought that early rattlesnakes, which lived in more rocky areas, developed a true rattle because of the lack of leaves or grass against which the tail could vibrate.

Ridgenosed rattlesnakes are threatened by thoughtless collectors, mining, recreational development, and woodcutting.

Did You Know?

This snake is venomous.