San Francisco garter snakes images

San Francisco garter snake (Thamnophis sirtalis tetrataenia) at the Exmoor Zoo.

San Francisco garter snake (Thamnophis sirtalis tetrataenia) at the Exmoor Zoo.

San Francisco garter snake (Thamnophis sirtalis tetrataenia) at the Exmoor Zoo.

An endangered San Francisco garter snake (Thamnophis sirtalis tetrataenia) at the Exmoor Zoo.

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