Simply Beautiful
As most people have pointed out, excellent animation. Its very well animated indeed. But I don't agree on what most think about the story-line.
If you look at it deeper than just the visual you see that its a metaphoric depiction of steve's struggle to become something. The endless wait for something exceptional to happen, the breaking of his bicycle and the ending part in the forest all stand for something. If one is to translate this into words, then this story is about man, left with almost nothing at all. A broken bicycle and his home on the verge of falling apart. When going to work he goes to a fearsome forest. This is his way of percieving it. The beast would also then be his way of perceive his employer and in the end he sold a part of him self (the tooth) to overcome his anger and fear. He gained money and succes. And lived happy afterwards.
You might agree or not. But I think it's up to you to choose what to believe. Is this just a pure cosmetic expression of the author. Or is it his way to make a narrative? However it is, try to go bit deeper.
And for the author: Outstanding work! This is one of thoose animtions that takes "it" a step further. You are a great artist with a well evolved sense for narrative. Don't let any who don't comply with your way of telling take it away from you. Keep it up - would like to see more work from you!