article: Agkistrodon contortrix
links: Sexual dimorphism John Edward Gray Oklahoma Tumour Laurence Monroe Klauber New Jersey New York (state) Tennessee Georgia (U.S. state) Chihuahua (state) Alabama Coahuila Copperhead (disambiguation) South Carolina Spring (season) Woodland Illinois Carl Linnaeus Pennsylvania Constantine Samuel Rafinesque Indiana United States Deciduous Virginia Ohio North Carolina Texas Nebraska Edward Drinker Cope West Virginia Kansas Delaware Kentucky Connecticut Thermoregulation Iowa Missouri Conifer Louisiana Mississippi Mexico Arkansas Mississippi River Massachusetts Maryland Florida Mouse Hibernation