Scientific name : Thamnophis gigas
Family : Colubridae
Native to : Western United States
Conservation status : Vulnerable
It is the largest of the garter snakes. It loves slow-moving water bodies and you can hardly find them out of water. Its olive brown body has two typical yellow stripes. They eat fish and frogs and release a pungent-smelling musk when threatened. They emerge in spring after hibernating inside burrows and breed producing live young ones.