What is Old World monkey?
{{Automatic taxobox | name = Cercopithecoidea<br />Cercopithecidae<ref name=msw3>{{MSW3 Groves|pages=152-178}}</ref> | fossil_range = {{Fossil range|Oligocene|Recent}} | image = Olive baboon Ngorongoro.jpg | image_caption = [[Olive baboon]] (''Papio anubis'') | taxon = Cercopithecidae | display_parents = 2 | authority = Gray, 1821<ref>{{Cite journal|last=Gray|first=J.E.|date=1821|title=On the natural arrangement of vertebrose animals|url=https://archive.org/stream/londonmedicalre08unkngoog#page/n309/mode/2up|journal=London Medical Repository|volume=15|issue=1|pages=296–310}}</ref> | type_genus = ''[[Cercopithecus]]'' | type_genus_authority = Linnaeus, 1758 | subdivision_ranks = Subfamilies | subdivision = [[Cercopithecinae]] - 12 genera<br /> [[Colobinae]] - 11 genera<br /> '''sister:''' [[Hominoidea]] | range_map = Total range of Old World Monkeys with Macaques and Hamadryas Baboon highlighted.jpg | range_map_caption = Range of Old World monkeys}} The '''Old World monkeys''' or '''Cercopithecidae''' are a group of [[primate]]s which are native to [[Africa]] and [[Asia]] today. The Old World [[monkey]]s live in a range of [[environment]]s from tropical [[rain forest]] to [[savanna]], [[shrub]]land and [[mountain]]ous terrain. They are also known from [[Europe]] in the fossil record. A (possibly introduced) free-roaming group of monkeys still survives in [[Gibraltar]] (Europe) to this day.<ref>The so-called [[Barbary ape]]</ref> Old World monkeys include many of the most familiar species of nonhuman primates, such as [[baboon]]s and [[macaque]]s. Old World monkeys are medium to large in size, and range from [[arboreal]] forms, such as the [[Colobus]], to fully terrestrial forms, such as the [[baboon]]s. The smallest is the [[talapoin]], with a head and body 34–37&nbsp;cm in length, and weighing between 0.7 and 1.3 kilograms, while the largest is the male [[mandrill]] at around 70&nbsp;cm in length, and weighing up to 50 kilograms (the females are much smaller).<ref name=EoM>{{cite book |editor=Macdonald, D.|auth