Besides being well known for their humanlike looks and tree-climbing abilities, the great apes possess many other unique traits that make them special. Do your readers know chimpanzees use two stones as a hammer and anvil to crack nuts? Or that bonobos and chimps pout and grin to show their feelings? The great apes can learn language. Readers learn fifty fun facts about great apes that make these magnificent creatures worth saving from extinction and how they can help.