Some scientists have studied the ability of certain species of monkeys to communicate using sounds and gestures. While these animals do not talk like humans, they can convey messages to each other through vocalizations and body language. For example, macaques and capuchins use specific calls to alert others about predators or food sources. Research has shown that apes, such as chimpanzees and bonobos, can learn to use symbols or sign language to communicate with humans. This ability highlights the complex social structures of these primates and their capacity for understanding and expressing ideas, although they still do not possess the same language skills as humans.