- copperhead, Agkistrodon contortrix - common coppery brown pit viper of upland eastern United States
--1 is a kind of pit viper
--1 is a member ofAgkistrodon, genus Agkistrodon, Ancistrodon, genus Ancistrodon - copperhead, Denisonia superba - venomous but sluggish reddish-brown snake of Australia
--2 is a kind of elapid, elapid snake
--2 is a member of Denisonia, genus Denisonia