Primates have hair, they give birth to live young, some mammals still lay eggs and mammals nurse their young. Dermoptera, scandentia are closest related species to humans other then primates. *primates are very tricky to define, some of their features are very generalized* All primates have a generalized skeletal structure. We have a derived set of bones. *a lot of primates have an erect structure when resting* Humans and apes have precision grip, humans have power grip. All primates have super sensitive finger tips: enhanced touch, humans are very good at manipulating things, humans do not have claws, we have nails, we have incisors, canines, premolars, molars. Reduced smell: reduced snout = sense of smell is reduced, humans have good sense of vision. Incidents of colour blindness in humans and primates. Primates have a large brain relative to their body size. Compared with other mammals, primates have: longer periods of growth, longer lifespan, very slow reproductive rate.