I have a game theory.
The squirrel can change its size.
As the squirrel was a bit bigger then the mouse.But then suddenly the squirrel was the same size as the mouse.It even got penatrated by the mouse. Pretty suspicious.
Got a sneekin feeling he lowkey Ratatoskr just banging around in midgard heh, sly boi
That could be true. (respect for god of war reference btw :P )