Western Black-headed Snake
Tantilla planiceps
- Least concern
- Card rarity: Common
- Reptiles

The western black-headed snake, also known as the California black-headed snake, is a snake species endemic to the Californias, as north as the San Francisco Bay and as far east as western Utah, and Texas. It lives in mostly moist pockets in mostly arid or semiarid environments and spends much of its life underground. It has a flattened head as most crevice-dwellers and is seven to fifteen inches in size. It is brown, slender, olive-gray, with a black head bordered by a white collar. Its habitat is often in woodland, desert areas, grassland and along arroyos in areas that are wet in a usually dry region.
Classification
- Class
- Reptilia
- Order
- Squamata
- Family
- Colubridae
- Genus
- Tantilla