Fair enough then, still you would have thought that they would have tranquilizers around a place like that - why did they have to wait for the police to arrive. It's escaped so shoot it straight away with some tranq's. Sounds unorganized to me.
And what would they do whilst they wait for the tranquillisers to take effect? "Sorry Sir, but the tiger will stop ripping you to pieces in just a moment when the Tranquillisers kick in". "Meanwhile, if you could just tickle her chin.............".