Rattlesnakes are a group of venomous snakes belonging to the Crotalinae subfamily, commonly found in the Americas. They are easily recognized by the distinctive rattle at the end of their tails, which they use as a warning signal to potential threats. Rattlesnakes have a triangular-shaped head and are typically well-camouflaged in their natural habitats, which include deserts, forests, and grasslands. These snakes are primarily nocturnal hunters, feeding on small mammals, birds, and reptiles. Rattlesnakes use their heat-sensing pits, located between their eyes and nostrils, to detect warm-blooded prey. While their venom can be dangerous, they usually prefer to avoid confrontation and will rattle their tails as a warning