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Keelbacks are Colubrid snakes of the subfamily Natricinae, so named because their dorsal scales exhibit strong keeling. The family is notable for containing some of the very few colubrid snakes (particularly of the genus Rhabdophis) known to be dangerous to man.
Characteristics
The body of the Checkered Keel Back snake is short, cylindrical and has a clear neck. Its head is slightly pointed. The eyes consist of a round pupils. Nostrils are narrow, directed slightly upwards. The tail is long. The female is longer in length than a male.