Zoo Tiger Escape National Geographic Explorer : Season 22 Episode 21

On Christmas Day 2007, a 243-pound Siberian tiger named Tatiana escaped from her open-air enclosure at the San Francisco Zoo and mauled three young men. Before long, one 17-year-old boy and the 4-year-old tigress lay dead. Zoo Tiger Escape investigates the how and why of what really happened that night-from the possible motivational factors that led the tiger to escape, to the complex evolution of enclosure design.