Painted Saw-scaled Viper
Venomous. Brown, reddish, or gray body; whitish, black-rimmed blotches along the back; short, rounded snout; vertical pupils; saw-like flank scales.
Mostly crepuscular and nocturnal. Aggressive and dangerous. Rubs its scales together to make a rasping sound when provoked. Sidewinds quickly on sand.
Lizards, small mammals, birds, and large invertebrates.
Dry, rocky valleys in western Jordan including the Jordan Valley, Wadi Dana, and Wadi Rum.