"Well, have you been bitten?" asks the sinister zoo worker.
"No, he snapped at me but didn't make contact." you lie.
"Well we'd rather you came with us anyway, just to be on the safe side."
"No I'm fine, honestly." you say.
"Sir, we insist!" says the zoo man as he and his co worker advance on you. That is when you turn and run!
You manage to give the men the slip and hide out in the men's toilets. You have a feeling the men will be waiting for you at the gate, so you decide to stay in the cubicle until nightfall.
Hours later, long after the last visitor leaves and the restrooms have been locked, night falls and the full moon rises. Instantly you feel yourself transforming. Your bodgy grows muscular and hairy. Your face changes, growing a muzzle with sharp fangs. Your hands and feet grow into huge clawed paws; you get to keep your thumbs but not your shoes.
As your transformation completes itself, you start to let out a howl - then you remember your mission and clamp your paws over your mouth. You can't wake the evil zoo staff. You have to free all the transformed animals, but first you have to get out of the locked restrooms somehow.