- puff adder, Bitis arietans - large African viper that inflates its body when alarmed
--1 is a kind of viper
--1 is a member of Bitis, genus Bitis - hognose snake, puff adder, sand viper - harmless North American snake with upturned nose; may spread its head and neck or play dead when disturbed
--2 is a kind of colubrid snake, colubrid
--2 is a member of Heterodon, genus Heterodon