The Water moccasin (Agkistrodon piscivorus) is a species of venomous pit viper. It is one of the world's few semiaquatic vipers (along with the Florida cottonmouth) and is native to the southeastern United States. As an adult, it is large and...
The copperhead (Agkistrodon contortrix) is a venomous pit viper endemic to eastern North America; it is a member of the subfamily Crotalinae in the family Viperidae. As a common species within its range, it may be encountered by humans. Unlike other...
Agkistrodon contortrix mokasen was formerly a venomous pit viper subspecies found in the eastern United States. However, recent taxonomic changes do not recognize the northern copperhead (A. c. mokasen ) as a valid taxon.
The Florida cottonmouth (Agkistrodon conanti) is a species of venomous snake, a pitviper in the subfamily Crotalinae of the family Viperidae. The species is endemic to the United States, where it occurs in southern Georgia and the Florida peninsula...
The western cottonmouth (Agkistrodon piscivorus leucostoma ) was once classified as a subspecies of the cottonmouth (Agkistrodon piscivorus ). However, DNA based studies published in 2008 and 2015, revealed no significant genetic difference between...
The Mexican cantil (Agkistrodon bilineatus) is a rare highly venomous pit viper species. In Sonora, Mexico, it is feared more than any other reptile. In Nicaragua, it is considered the country's most dangerous snake. The word 'cantil' in the common...
Agkistrodon laticinctus is a venomous pit viper species, formerly considered a subspecies of Agkistrodon contortrix, which is found in the southern United States, from Kansas, through Oklahoma and throughout central Texas.
Agkistrodon piscivorus piscivorus was formerly a venomous pitviper, one of three subspecies of Agkistrodon piscivorus, with different geographic distributions, found in the southeastern United States. However, recent taxonomic changes do not...
Agkistrodon contortrix phaeogaster was formerly a venomous pit viper subspecies found in the central region of the United States. However, recent taxonomic changes do not recognizes the Osage copperhead (A. c. phaeogaster ) as a valid taxon.
Agkistrodon contortrix pictigaster was formerly a venomous pit viper subspecies found in the Trans-Pecos region of the United States in western Texas, and northeastern Mexico. However, recent taxonomic changes do not recognizes the Trans-Pecos...
Agkistrodon taylori is species of venomous snake, a pitviper (Crotalinae) found only in northeastern Mexico. The standardized names are Taylor's cantil (English) and Metapil (Spanish), although it is sometimes called the ornate cantil: 51 p. as...
Agkistrodon howardgloydi is a species of venomous snake, a pit viper (Crotalinae), that is endemic to Central America. It is most commonly called castellana,: 135 p. : 87 p. : 718 p. but it has also been called the southern cantil,: 60 p. Gloyd's...
Agkistrodon russeolus, commonly called the Yucatecan cantil, is a venomous pit viper species endemic to the Yucatán Peninsula in Mexico and northern Belize.
