Anaconda

Anacondas or water boas are a group of large snakes of the genus Eunectes. They are found in tropical South America. Four species are currently recognized.

Hypnale

Hypnale is a genus of venomous pit vipers endemic to Sri Lanka and southwestern India. Three monotypic species are currently recognized. All members have more or less upturned snouts that produce a hump-nosed effect

Sri Lanka scimitar babbler

The Sri Lanka scimitar babbler or Ceylon scimitar babbler is an Old World babbler. It is endemic to the island of Sri Lanka, and was formerly treated as a subspecies of Indian scimitar babbler. The nominate form is found in the western part of wet hill

Ophryacus

Ophryacus is a genus of venomous pit vipers endemic to Mexico. The name is derived from the Greek word ophrys, which means "brow", and the Latin word acus, which means "needle", an allusion to the characteristic horn-like scales over the eyes. Currently

Crotalus viridis nuntius

Crotalus viridis nuntius is a venomous pit viper subspecies native primarily to the desert plateau of the northeastern portion of the American state of Arizona, but also ranges into northwestern New Mexico. Named for the Native American Hopi tribe, which

Indotyphlops pammeces

Indotyphlops pammeces, the South India worm snake, is a harmless blind snake species found in southern India. No subspecies are currently recognized

Sistrurus catenatus tergeminus

Sistrurus catenatus tergeminus is a venomous pit viper subspecies found in the southwestern plains of the United States. In some areas its range overlaps that of another subspecies, S. c. edwardsii, and intergrading of the two is not unknown

Charina

Charina is a genus of nonvenomous boas, commonly known as rubber boas, found in North America. Three species are currently recognized

Corallus annulatus blombergi

Corallus blombergi, the Ecuadorian annulated tree boa, is a boa species found in Pacific Ecuador

Crotalus lepidus

Crotalus lepidus is a venomous pit viper species found in the southwestern United States and northern central Mexico. Four subspecies are currently recognized, including the nominate subspecies described here

Pimelodella brasiliensis

Pimelodella brasiliensis is a species of three-barbeled catfish of the family Heptapteridae. It is endemic to the Paraíba do Sul river basin in Brazil, although there are unconfirmed records from elsewhere. This species reaches a total length of 18.0 cm