NNTRC Snakes

Scientific Name

Crotalus ruber ruber

Common Name 

Red Diamond Rattlesnake

Physical Characteristics

Length, (70-160 cm). Tan, pink, or dark red above, with brown to blackish, light edged, diamond-shaped or hexagonal blotches on the back, and sometimes with fainter smaller blotches on the sides. The distinct tail is marked with evenly spaced black and white rings.

Geographic Range (USA, Mexico)

Extreme southwestern California in the United States southward throughout Baja California del Norte and the upper half of Baja California del Sur, Mexico.

Map button button

Found in desert scrub, chaparral, rocky outcrops, and occasionally grasslands. Can be found from sea level to 1500 m.


Mammals (mice, rats, squirrels, rabbits), and birds.


Hemorrhagic toxins, resulting in tissue damage and edema.


The red diamond rattlesnake can be quite passive and is usually reluctant to rattle or strike. This is in sharp contrast to its similar looking and aggressive cousin the western diamondback rattlesnake. However, because of their size they can deliver a large amount of venom in a bite so they should be considered dangerous.

This page was last updated on: February 12, 2016