Stuck Animal

This is the strange thing that the woodcutters discovered inside the tree. This is an animal that somehow got stuck inside the tree’s trunk, but how did the animal get inside there in the first place? And what was it?
This is the strange thing that the woodcutters discovered inside the tree. This is an animal that somehow got stuck inside the tree’s trunk, but how did the animal get inside there in the first place? And what was it?