Without a clue nor any idea where you were transported to, you debated on whether or not you should try to get out. You risk discovery the longer you stay here, yet the doors were barred shut and your only other way out was going through the vents. Unwilling to end up getting caught and changed, you decided to climb up to the vents. Using the barrels and shelves below the vent as a makeshift ladder, you steadily scaled up the walls - your hands and feet making little noise as they scrabbled against the solid wooden surface.
Your limbs and your chest burned with effort and exhaustion, barreling out even more into pure muscles and tendon as you exerted them. Slowly but surely, you were gaining a body as healthy and strong as a horse... or rather, a donkey. A wheezily bray escaped from your muzzle as you felt yourself getting tired out. You're no mountain goat, donkeys were not born to do this sort of thing.
Higher and higher, closer and closer you get. You could soon almost grip the edges of the opening, when...