intro: "What happens when the world's top predator decides to go off behavior? It can get ugly real quick."
That was Dr. Jeff Ventre in an interview with "20/20." He was describing killer whales, which he trained for three years at SeaWorld, but his point -- captivity breeds aggression -- applies to many species, in water and on land.
And trainers aren't the only victims. Zoos, which we think of as places for innocent family fun, have seen their share of ugly attacks -- many caused by humans...Full Story