After a conversation with my son, it turns out that he has no problem with the idea of a talking groundhog who has impressive long-range meteorological skills. It's the part where "he can see his shadow" that overloads his suspension of disbelief.
Fun short talk surfaced by the YouTube algorithm on how the DOOM first-person game plays in a non-Euclidean geometry (π ≉ 3.14159): youtu.be/_ZSFRWJCUY4