Abstract
Anyone who has ever kept orang-utans would agree that they are the most lovable and fascinating of animals. Their sad expressions and reserved ways give them a depth of character rare outside our own species. Man's interest in them has been great for hundreds of years and cave deposits from Sarawak show that our ancestors of thirty thousand years ago shared this interest. Yet the orang-utan or ‘man of the woods’ has now become the rarest, most threatened and least understood of all the apes.