British zookeepers are caring for Okanda, a baby male Western Lowland gorilla and they aren't smiling. But, it's not because they're unhappy; it's to save his life. Showing teeth is a sign of aggression in this endangered species, which has an estimated worldwide population of 100,000, and if Okanda should smile at another gorilla, it would likely result in his death.

Full Story:
ABC News

Related Summaries