Snakes, often feared for their venom, are fascinating reptiles with complex roles in ecosystems. From the vibrant blue coral snake of Southeast Asia t ...

The narrow-headed garter snake is a nonvenomous snake found in and near the cool, clear headwater streams of the U.S. Southwest. With its stripeless, grayish-colored body, it has been called “drab” in ...

San Francisco garter snake (Thamnophis sirtalis tetrataenia) Known for its bright blue or greenish-blue belly, red and black stripes, and the well-known red head, San Francisco garter snake is one ...