Sam reigns supreme! He's the leader of a troop of baboons living on the rugged hills of the Cape of Good Hope. It's a peaceful family existence, of feeding and playing, swimming and wrestling. A language of grunts, yawns and mutual grooming orders their social life. But for how much longer?

There are threats from just over the clifftop - not only from subordinate males waiting to challenge Sam's authority, but from the tourists who visit this windswept peninsula and want to share the view.

BBC Bristol
(Next week: Encounter Underground)

(Subtitles on Ceefax page 170)