The western hook-nosed snake, a small snake endemic to the deserts of the United States and Mexico, is famous for the shape of its snout and for farting to confuse its enemies.
Cobras and rattlesnakes have their deadly venom, constrictors like pythons and Boa have their strong musculature, but the western hook-nosed snake doesn’t have either, so it relies on a more unusual defense mechanism – farting. When threatened, it emits rumbling air bubbles from the cloaca – the common opening for excretion at a snake’s rear end. Known and cloacal popping or defensive flatulence, this strange means of defense is designed to confuse predators long enough for the snakes to escape.
