pit vipers

Pit vipers are a family of venomous snakes known for the heat-sensing pit organs located between their eyes and nostrils, which help detect warm-blooded prey. They include species like rattlesnakes, copperheads, and cottonmouths. These snakes have triangular heads and hinged fangs that can fold back when not in use. They rely on venom to immobilize prey and begin digestion before swallowing. Pit vipers are primarily found in the Americas, often in environments such as forests, grasslands, and deserts. They play an important role in ecosystems by controlling rodent populations.