Monkeys!!

They're are at least 145 living species suborder Anthropoideas. Over 90% of them are monkeys! All primates have the same kind of teeth for eating wide varieties of foods.Beginning at the front, each quadrant of the mouth has 2 incisors, 1 canine, and varying numbers of premolars and molars. All of their teeth are used for different things such as cutting stuff or crushing food.

Many of the larger New World monkeys have prehensile, or grasping, tails that are capable of being used as strong "third hands" for holding onto branches and supporting their bodies. None of the older monkeys have this capability.Many old world monkeys have ischial callosities which is like a pad that is on their butt because they may sit or sleep for long periods of time. The new world monkeys do not have this capability. So as you can see some monkeys have certain things that others don't.


In addition to these differences, New World monkeys are almost exclusively arboreal and most of them are smaller than Old World monkey species. Some Old World monkeys and apes are semi-terrestrial. If you see just some monkeys that are walking around casually in grassland or savanna you can expect that they are old world monkeys. The old world monkeys are generally larger, more intelligent, and have more highly developed eyes than the others.These two different groups of species can distinguished from each other most easily based on the form of their noses and by the number of specific types of teeth.