A leopard stands in the hall, carefully looking around. From the looks of it, it's female, and it most likely escaped from the zoo when they let the animals loose. Where else would it have come from?
Fortunately, the leopard seems to have been injured - a gunshot wound has made a gash in one of its legs, probably the signs of the final struggle between it and a human. But it's blocking the way out, and you won't be able to get out with it in the way. You don't have any weapons, either, and if it so much as nips you, you're done for.
You're about to inch out of the room when you spot a gun lying on the floor, maybe left behind by one of your neighbors. If you could get to it, you could shoot the animal and continue on...