You always wanted to have a pet to take care of, but never had money to buy one from pet shop... luckily for you, this evening, someone knocked on your door, leaving a paper box by your door before running off. Making sure that this surprise in form of a box was indeed for you, you dragged it inside, closing the door behind you. The box is big enough to contain some... big delivery.

You heard a cat-like growling coming from inside the box. Hm. Would you open it anyway? It's closed shut...