West Coast Garter Snake
- kingdom: Animalia
- phylum: Chordata
- class: Reptilia
- order: Squamata
- family: Natricidae
- genus: Thamnophis
- species: Thamnophis valida
Cabo San Lucas- La Paz
- San José del Cabo
Baja California Sur- Acapulco
Guerrero- Cihuatlán
- Jaluco
- San Patricio
Jalisco- Guaymitas
- Hermosillo
- Navojoa
Sonora
Mexico