Authenticated (16/01/2006) by Matt Richardson, independent primatologist and writer.
Diurnal: Active during the day.
Quadrupedal: Walking on all fours, as opposed to walking on two legs.
Succession: The progressive sequence of changes in vegetation types and animal life within a community that, if allowed to continue, result in the formation of a ‘climax community' (the last stage in a succession where the vegetation reaches equilibrium with the environment).