Pumpkin-carving is an art form at this Halloween event
On World Gorilla Day, get to know these furry primates a little better.
Possibly Calaya, one of the Western lowland gorillas, relaxes in the sun at the National Zoo in Washington. Despite often being called monkeys, gorillas are actually great apes. Monkeys have tails; gorillas do not. Bill O'Leary/The Washington Post