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Bullsnake Bullsnake
Common Adder Common Adder
San Francisco Garter Snake San Francisco Garter Snake

Common Adder

Common Adder
The common adder, a member of the viper family, is among the few snakes found north of the Arctic Circle. The snake’s triangular head is expanded at the rear to accommodate its large venom glands.
Frithjof Skibbe/Oxford Scientific Films
Appears in these articles:
Snake (reptile); Adder
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