Pretty good however I find a few things strange about this (looking at it in a critiquoral perspective):
1. the coloration, ears and thick mussle of the wolf makes me think he's a wild dog more than a fat wolf. sorry to say.
2. There's got to be a backstory why such a capable fox is teamed up with what seams to be such a selfish and dependant wolf
3. There should be more ear play, sneaking into the door, the fox and wolf would curl their ears back, in order to protect them, same as when the fox is pushing the wolf.
4. This is minor but you could use more realistic sound effects. I think the best way is to use the mike feature on your phone and act out the sounds... like walking on a bord, rather than knocking on one.