There are three species of snake named olive keelback:
Cobra is the common name of various snakes, most of which belong to the genus Naja.
Different snakes are called water snakes. "Water snake" is also sometimes used as a descriptive term for any snakes that spend a significant time in or near fresh water, such as any species belonging to the family Acrochordidae. They should not be confused with sea snakes, which live primarily or entirely in marine environments.
The buff striped keelback is a species of nonvenomous colubrid snake found across Asia. It is a typically nonaggressive snake that feeds on frogs and toads. It belongs to the subfamily Natricinae, and is closely related to water snakes and grass snakes. It resembles an Asian version of the American garter snake. It is quite a common snake but is rarely seen.
Atretium schistosum, the split keelback or olive keelback wart snake, is a species of snake found in South Asia. It is a common and harmless watersnake.
Rhabdophis subminiatus, commonly called the red-necked keelback or red-necked keelback snake, is a species of venomous snake in the subfamily Natricinae of the family Colubridae. The species is endemic to Asia.
Trimerodytes percarinatus, commonly known as the eastern water snake, olive keelback, olive annulate keelback or Chinese keelback water snake, is a species of snake in the subfamily Natricinae.
St. John's keelback is a species of snake in the subfamily Natricinae of the family Colubridae. The species is endemic to Asia.
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.
Rhabdophis is a genus of snakes in the subfamily Natricinae of the family Colubridae. Species in the genus Rhabdophis are generally called keelback snakes, and are found primarily in Southeast Asia.
Common keelback may refer to several species of colubrid snakes of the subfamily Natricinae:
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.
Opisthotropis is a genus of snakes in the family Colubridae. The genus is endemic to Southeast Asia and South China.
The Alethinophidia are an infraorder of snakes that includes all snakes other than blind snakes and thread snakes. Snakes have long been grouped into families within Alethinophidia based on their morphology, especially that of their teeth. More modern phylogenetic hypotheses using genetic data support the recognition of 19 extant families, although the taxonomy of alethinophidian snakes has long been debated, and ultimately the decision whether to assign a particular clade to a particular Linnaean rank is arbitrary.
The rough-scaled snake is a highly venomous Australian elapid. The animal's name comes from its scales that are raised above the surrounding scales and have rough texture. The scales are known as "keels".
Helicops is a genus of snakes of the family Colubridae. The genus is endemic to South America.
Trimerodytes is a genus of snakes in the subfamily Natricinae of the family Colubridae. The genus is endemic to East Asia and Southeast Asia.
Tropidonophis is a genus of snakes in the subfamily Natricinae of the family Colubridae.
Herpetoreas is a genus of snakes in the subfamily Natricinae of the family Colubridae. The genus is endemic to South Asia.
Fowlea is a genus of snakes in the subfamily Natricinae of the family Colubridae. The genus is endemic to Asia.
There are two species of snake named Yunnan keelback: