* Grunts: Grunts are low-pitched sounds that are often used to express contentment or satisfaction.
* Chatters: Chatters are rapid, high-pitched sounds that are often used to communicate excitement or nervousness.
* Screams: Screams are loud, piercing sounds that are often used to express fear or anger.
* Hoots: Hoots are low-pitched, guttural sounds that are often used to attract mates or warn off predators.
* Whistles: Whistles are high-pitched, musical sounds that are often used to communicate over long distances.
In addition to these common sounds, monkeys also make a variety of other noises, such as barks, clicks, and squeaks. The meaning of these sounds can vary depending on the species of monkey and the context in which they are made.