The Western Diamondback is usually inactive between late October and early March, though an occassional rattlesnake may be seen sunning itself on warm winter days. The young are fully capable of delivering a venomous bite hours after their birth. The Western Diamondback also has an extensive range in the the northern half of Mexico. In Texas, Crotalus atrox is found throughout the state, save the wettest eastern portions of the state. This project funded by the University of Texas College of Natural Sciences and the Texas Memorial Museum .
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