Agkistrodon contortrix
Copperhead snakes have reddish-brown bodies with a crossband pattern consisting of tan and copper. The average length adult copperheads is 76 cm in length. and are normally described as heavy-bodied snakes. Copperheads are sexually dimorphic. The head has a solid, rich brown color. Copperhead venom is usually not fatal to healthy adult humans. They can live up to 18 years.