Are you surprised? Consider this:
[Zoo] animals do not escape to somewhere but from something. Something within their territory has frightened them ... and set off a flight reaction. The animal flees, or tries to. I was surprised to read at the Toronto Zoo ... that leopards can jump up to eighteen feet straight up. Our leopard enclosure in Pondicherry was sixteen feet high at the back. I surmise that Rosie and Copycat never jumped out was not because of constitutional weekness but simply because they had no reason to. Animals that escape go from the known to the unknown--and if there is one thing an animal hates above all else, it is the unknown.That's a passage many will recognize, from "The Life of Pi." I copied it out once before, in a post called "Jabari was wronged," about a gorilla who managed to climb the 15' concave wall of his enclosure.
Jabari — who was shot to death — had been taunted. Who knows what moved the tiger?