Genus
Coluber (North american racers)
Coluber constrictor mormon. Photo: (c) ashley_w, some rights reserved (CC BY)
Coluber is a genus of thin-bodied, fast-moving, colubrid snakes commonly known as racers. They are widespread around the world and vary greatly in habitat and behaviour. In the past, Coluber was a catch-all genus which included almost all snake species known at the time. Even the cobra was once classified as Coluber naja.
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