Investigators are attempting to figure out how a 350-pound Siberian tiger escaped her enclosure at the San Francisco Zoo yesterday, crossing a 15-foot moat and scaling a 20-foot wall. The tiger, Tatiana, killed a man and severely mauled two others before being shot and killed by police. The surviving victims are listed in critical but stable condition.
It was the animal's second violent incident; she mauled a zookeeper last year. After that attack, Tatiana's enclosure was renovated to correct design concerns cited by state safety officials. A zoo trainer told ABC News yesterday's attack "likely had little to do with hunger" and emphasized that "when they're working with wild animals, they're very hard to control."