It's hard to work out just how many chimpanzees - which share more than 98 per cent of our DNA - are left; reporting is inaccurate and incomplete. But their numbers have been crashing, and even the most generous estimates place their numbers worldwide as no bigger than the human population of Bonn, Germany. They are clearly endangered and could well soon be extinct in the wild. Habitat loss, the pet trade and hunting for bushmeat are the main culprits.
Source: World Atlas of Great Apes and their Conservation.
UNEP-WCMC, 2005.