It's important to remember that "monkey" is a very broad term and includes a wide variety of primates. They are generally divided into two major groups:
* New World monkeys: Found in Central and South America. These monkeys have prehensile tails (tails that can grasp objects).
* Old World monkeys: Found in Africa and Asia. They do not have prehensile tails but have cheek pouches for storing food.
Within these two groups, there are many different families, genera, and species, each with their own unique characteristics and adaptations.