Tiger that mauled three teens at San Francisco Zoo appears to .
· Tiger that mauled three teens at San Francisco Zoo appears to have been provoked, report says. February 12, 2011 | 2:53 pm. A Siberian tiger killed in a hail of police gunfire after fatally mauling a man at the San Francisco Zoo on Christmas Day 2007 likely was provoked into leaping and clawing out of its enclosure, a federal investigator said in .