Photographs by David Welling (copperhead), James L. Stanfield (Indian python), Ray Rauch/U.S. Fish & Wildlife (broad-banded copperhead), George Grall (milk snake), Pete Oxford/Minden Pictures (emerald tree boa), Gerry Ellis/Minden Pictures (green tree pythons), Michael & Patricia Fogden/Minden Pictures (eyelash viper), Jurgen Freund/naturepl.com (banded sea krait), Mark Moffet/Minden Pictures (paradise tree snake)