- The Coachwhip snake (Masticophis Flagellum) is one of the most remarkable, fast-moving reptiles found across southern Arizona - Known for their incredible speed, reaching up to 3.6 miles per hour , and their active, visual hunting style, these non-venomous snakes are a common sight in the Sonoran desert - Depending on where in southern Arizona, Coachwhips can vary drastically in color, ranging from striking jet black with bright pink bellies to olive, tan, or solid brick red - Southern Arizona is unique because it serves as a meeting ground for distinct visual variations and subspecies of Coachwhips