Suborder:
Platyrrhini
| Superfamily:
Ceboidea
| Family:
Cebidae
The Cebid family is very diverse, and it is therefore difficult to make generalizations about them. The Cebid species differ in size from about 2 to 27 pounds. Cebids are all arboreal? and quadrupedal?. Most cebids are diurnal, with the exception of the Aotus genus which is nocturnal?.
As compared to the other New World monkey family, Callitrichidae, cebids differ in that they have 36 teeth and have nails while Callitrichidae have 32 teeth and have claws. Callitrichids frequently give birth to twins and triplets but cebids rarely do.