Common Name:
Common garter snake 

Scientific Name: 
Thamnophis sirtalis

Identification: 15 - 45 in; Two different color 
patterns exist: dark brown or olive with three 
yellowish, white or orange stripes, or tan to 
dark brown overlain by rows of black spots, 
usually with a prominent white, yellow or orange 
stripe down the middle of the back and a pale 
stripe on each side; belly pale tan to pale green 
with a row of black dots on each side; scales 
keeled.

Habits: Garter snakes are found in most habitats including backyards.  They eat tadpoles, frogs, toads and earthworms.

Distribution: Most of Louisiana but known from very few localities west of the Red River and Atchafalaya Basin.

Comments: Garter snakes will often flatten their bodies and pull their necks into a "S' shape when agitated. They are fairly irritable and often release musk when caught. However, they are not venomous.