Authenticated (05/03/2006) by Matt Richardson, independent primatologist and writer.
Arboreal: A species that lives in trees.
Endemic: A species or taxonomic group that is only found in one particular country or geographic area.
Gestation: The state of being pregnant; the period from conception to birth.
Montane forest: Forest occurring in the montane zone, a zone of cool upland slopes below the tree line dominated by large evergreen trees.
Opposable: Referring to a digit, (thumb or toe), that can be turned so that its pad makes contact with the pad of each of the other digits on the same limb.
Territory: Area occupied and defended by an animal, a pair of animals or a colony.
Vestigial: A characteristic, often reduced in form, with little or no contemporary use, but derived from one which was useful and well developed in an ancestral form.