Vipers are a family of venomous snakes known as Viperidae. They are characterized by their long, hinged fangs that allow them to inject venom into their prey. Vipers are found in various habitats around the world, including forests, deserts, and grasslands. They typically have a stout body and a triangular-shaped head, which helps distinguish them from non-venomous snakes. These snakes primarily feed on small mammals, birds, and reptiles. Vipers use a method called ambush hunting, where they remain still and wait for their prey to come close before striking. Their venom is used to immobilize prey and begin the digestion process, making them effective predators in their ecosystems.