Certain species of monkeys, such as the capuchin monkey, are known for their intelligence and dexterity. They often use tools, like stones, to crack open nuts, showcasing their problem-solving abilities. Capuchins are social animals, living in groups that help them find food and protect each other from predators. Another interesting species is the howler monkey, famous for its loud vocalizations that can be heard over long distances. These monkeys have a unique throat structure that amplifies their calls, which they use to communicate with other members of their troop. Howler monkeys primarily eat leaves and fruits, making them important for seed dispersal in their habitats.