Vipera is a genus of venomous snakes commonly known as vipers. They are primarily found in Europe, Asia, and North Africa. These snakes are characterized by their triangular heads, slit-like pupils, and long fangs, which they use to inject venom into their prey. Viperas are typically ambush predators, relying on their camouflage to blend into their surroundings. They feed on small mammals, birds, and lizards. Some species, like the European adder and Horned viper, are well-known for their distinctive patterns and colors, which help them adapt to various habitats.