What rattlesnakes are found around San Diego?
In our area, the only venomous snakes are rattlesnakes. In the coastal and mountain regions of San Diego County there are three kinds: the Southern Pacific Rattlesnake (Crotalus viridis), the Southwestern Speckled Rattlesnake (C. mitchelli pyrrhus), and the Red Diamond Rattlesnake (C. ruber). In the desert is the Colorado Desert Sidewinder (C. cerastes).