I have heard that a wild animal expert says that the precautions at the zoo--which included a water moat, surrounded by a high wall--are undoubtably
enough to keep the animal secure. He thinks something undisclosed must have happened, or the tiger could not have gotten out.
I am inclined to think some person is responsible, whomever made it possible for the tiger to escape. I certainly don't blame the tiger for
following his nature.