Aww cute little game. Art style and music were great. I think think something that might help with this game is to introduce "grid like" movement. It was really easy to get stuck on walls and to push the barrels just past the threshold of a doorway. Overall I thought the puzzles were clever. It kinda stunk having to redo everything though if I moved a millimeter over the spikes as the dog. So maybe adding a checkpoint system after possessing the dog could be helpful for players.
Cute game.