Colubridae is a family of snakes. With 249 genera, it is the largest snake family. The earliest fossil species of the family date back to the Late Eocene epoch, with earlier origins suspected. Colubrid snakes are found on every continent except Antarctica.
Anomochilidae is a family of snakes with one genus, Anomochilus, containing three species of snake. Members of the genus are known as anomochilids, or by the common names dwarf pipesnakes, lesser pipesnakes, and giant blind snakes. Initially created as Anomalochilus in 1890 for the species A. weberi, the genus was renamed in 1901 because the original name was already in use for a genus of beetles. Dwarf pipesnakes are small and cylindrical, with short, conical tails and small, rounded heads that are continuous with the neck. They have blackish to purplish-brown uppersides and dark brown or black undersides, with orange-red bands around the tail and a variety of pale markings on the snout and belly. All three species of dwarf pipesnake are endemic to Sundaland, where they are found on the Malay Peninsula and the islands of Sumatra and Borneo.
The Acrochordidae, commonly known as wart snakes, Java wart snakes, file snakes, elephant trunk snakes, or dogface snakes are a monogeneric family created for the genus Acrochordus. This is a group of basal aquatic snakes found in Australia and tropical Asia. Currently, three species are recognized.
Morelia is a genus of large snakes in the family Pythonidae. The genus is native to Australia, Indonesia, and New Guinea. As of 2024, up to eight species are recognized.
Drymarchon is a genus of large nonvenomous colubrid snakes, commonly known as indigo snakes or cribos, found in the Southeastern United States, Mexico, Central America, and South America.
Oligodon is genus of colubrid snakes that was first described by Austrian zoologist Leopold Fitzinger in 1826. This genus is widespread throughout central and tropical Asia. The snakes of this genus are commonly known as kukri snakes.
Protobothrops mangshanensis, commonly known as the Mangshan pit viper, Mangshan pit viper, Mt. Mang pit viper, or Mang Mountain pit viper, is a pit viper species endemic to Hunan and Guangdong provinces in China. No subspecies are currently recognized. This is a nocturnal pit viper that is also known as the ''Mangshan iron-head snake'', ''Chinese pit viper'', and the ''Ironhead viper''. They eat frogs, birds, insects, and small mammals. They have a white tail tip that they wiggle to mimic a grub so that prey comes into striking range—a behaviour known as caudal luring. The venom causes blood clotting and corrodes muscle tissue and can be fatal to humans if not treated. Unusually for vipers, P. mangshanensis is oviparous with the female laying clutches of 13–21 eggs which she will guard until they hatch.
Python is a genus of constricting snakes in the Pythonidae family native to the tropics and subtropics of the Eastern Hemisphere.
Leptotyphlops is a genus of nonvenomous blind snakes, commonly known as slender blind snakes and threadsnakes, in the family Leptotyphlopidae. The genus is endemic to and found throughout Africa. Eleven species have been moved to the genus Trilepida, and other species have been moved to the genera Epacrophis, Epictia, Mitophis, Myriopholis, Namibiana, Rena, Siagonodon, Tetracheilostoma, and Tricheilostoma.
The Natricinae are a subfamily of colubroid snakes, sometimes referred to as a family (Natricidae). The subfamily comprises 36 genera. Members include many very common snake species, such as the European grass snakes, and the North American water snakes and garter snakes. Some Old World members of the subfamily are known as keelbacks, because their dorsal scales exhibit strong keeling.
The red-tailed pipe snake, red cylinder snake, or common pipe snake is a nonvenomous cylindrophiid snake species found in Southeast Asia. No subspecies are currently recognized.
Hydrophis is a genus of sea snakes, venomous snakes in the subfamily Hydrophiinae of the family Elapidae. Species in the genus Hydrophis are typically found in Indo-Australian and Southeast Asian waters. Currently, around 36 species are recognized as being valid.
Xenotyphlops is a genus of snakes, the only genus of the family Xenotyphlopidae, comprising two species found only in Madagascar. These snakes are also known as the Malagasy blind snake.
Alsophis is a genus of snakes in the subfamily Dipsadinae of the family Colubridae. Species in the genus Alsophis are among those snakes commonly called "racers". Alsophis species are endemic to the Lesser Antilles in the Caribbean. One species in the genus Alsophis, A. antiguae, is one of the world's rarest known snakes. Snakes of the genus Alsophis are small and rear-fanged, and they are considered harmless to humans. This genus contains nine described species which are recognized as being valid. Several species once included in this genus have been placed in the genera Borikenophis and Pseudalsophis.
Boomsong's stream snake, also known as Boomsong's keelback and Boonsong's stream snake, is a species of snake in the family Colubridae, subfamily Natricinae (keelbacks). It is monotypic in the genus Isanophis. The species is endemic to Thailand.
Eels are ray-finned fish belonging to the order Anguilliformes, which consists of eight suborders, 20 families, 164 genera, and about 1000 species. Eels undergo considerable development from the early larval stage to the eventual adult stage and are usually predators.
Keelback may refer to any of the following snake genera:
Robert Frederick Inger was an American herpetologist. During his lifetime, he wrote numerous books and publications about herpetology. He was also the curator for amphibians and reptiles at the Field Museum in Chicago, Illinois.
Coelognathus flavolineatus, the black copper rat snake or yellow striped snake, is a species of colubrid snake found in Southeast Asia. This species was previously recognized in the genus Elaphe.
The gray skink is a species of skink endemic to Madagascar.
