Description
This species commonly grows to more than 100 centimetres (3.3 ft) in length. The maximum recorded size is 151.5 centimetres (4.97 ft) (Klauber, 1937). In Montana, specimens occasionally exceed 120 centimetres (3.9 ft) in length; Klauber (1972) mentioned that the species reaches its maximum size in this region. One of the most characteristic features is the presence of three or more, usually four, internasal scales.
Read more about this topic: Crotalus Viridis
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