Good job, we both made games about foxes :D
The idea is really interesting, and the puzzles are certainly convincing!
One thing I'd say though, some areas I can bonk my head into the tile that's above me, and that's really hard to get through. Also, when you use one as the platform of another and then switch back, the other one stays floating in the air, just wanted to point that out.
Otherwise, fun game!