Check out this video of the little boy who fell into the Silver Back Guerilla enclosure recently at the Cincinnati zoo. How frightening for the mother and the child. The child wanted to go "play in the water" in the enclosure so he scurried off and jumped into the enclosure. He is only 3 (or 4) so he perhaps didn't quite understand what he was doing. But the video is fascinating to see how the guerilla treats the boy and the panic that must be going through the mom and boy. Though the boy emerged unharmed, it's a sad story because the guerilla, 17 years old and an endangered species, was shot and killed to protect the boy. Tranquilizers were an option but the zoo staff feared the tranquilizers would cause the guerilla to lash out against the boy and/or possible pass out on top of the boy, thus crushing him.