Western Rattlesnake
Western rattlesnake may refer to: * ''Crotalus oreganus'', a venomous pitviper species found in North America in the western United States, parts of British Columbia and northwestern Mexico * ''Crotalus viridis ''Crotalus viridis'' (Common names: prairie rattlesnake, Great Plains rattlesnake, Wright AH, Wright AA. 1957. ''Handbook of Snakes of the United States and Canada''. Ithaca and London: Comstock Publishing Associates. (7th printing, 1985). 1,105 ...'', a.k.a. the prairie rattlesnake, a venomous pitviper species native to the western United States, southern Alberta, Canada, and northern Mexico {{SIA, snakes ...
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Crotalus Oreganus
''Crotalus oreganus'', commonly known as the (northern) Pacific rattlesnake, Wright AH, Wright AA. 1957. Handbook of Snakes. Comstock Publishing Associates. (7th printing, 1985). 1105 pp. . is a venomous pit viper species found in western North America from the Baja California Peninsula to the southern interior of British Columbia. Description The size of this species varies greatly, with some populations being stunted and others growing very large. Mainland specimens often reach in length, with the largest on record being (Klauber, 1956)Campbell JA, Lamar WW. 2004. The Venomous Reptiles of the Western Hemisphere. Comstock Publishing Associates, Ithaca and London. 870 pp. 1500 plates. . for ''C. o. oreganus''. Klauber LM. 1997. Rattlesnakes: Their Habitats, Life Histories, and Influence on Mankind. Second Edition. First published in 1956, 1972. University of California Press, Berkeley. . This species, in its various forms, shows considerable ontogenetic variation. Juveniles u ...
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