He has the responsibility of protecting them from the dangers that abound on the forest floor where they feed. To sustain his huge size, he must consume up to thirty kilos a day. It's mostly plant food, but western gorillas also enjoy a sprinkling of termites. The youngsters need to eat far less than their father, so they've got time on their hands. They like to play for the same reasons we do... for fun. And it helps build long-lasting relationships. Their protector keeps a watchful eye on them.