No mention of Tatiana the Amur tiger at San Francisco Zoo? I assume you all know, but she escaped on Christmas Day (2005?) and injured 2 people (brothers) whilst killing another (their friend). This resulted in a major overhaul of the cat grottos at the zoo to make them more secure. The amazing thing is that tigers were held in the enclosure for over 40 years without it changing, and in all of that time a tiger had not escaped. I still don't think they know how it happened, but I think they believe something triggered the cat to snap, making it more determined to make the jump (really rubbish way of putting it, but I can't think of how else to say what I mean. Hope you all get the jist

)