Crotalus vegrandisCrotalus vegrandis, or the Uracoan Rattlesnake, is a venomous pit viper that is endemic to Venezuela.DescriptionKlauber gives two maximum lengths: 636 mm for the largest measured specimen, and 684 mm as the greatest value from a report believed to be reliable.Geographic rangeThe species only occurs in its type locality of the Maturín Savannah, near the Uracoa Municipality, within the state of Monagas.