I was rewatching episodes (again) because I had nothing else to do. This episode was "Santa Baby" and it got me wondering. Is Santa a Human or an animal? It never shows his face, skin, etc. And I think that was intentional to hide something...
I've been searching for a while, and this is the closest I can get to showing Santa's face. So is he really an animal? Some ideas that I have to think he's a human is that he's riding a sleigh pulled by reindeer. Would an animal really ride other animals? I don't think so.
And look how THICK Santa is. Last time I've checked, only humans are that fat. If there are any really fat animals in the show, please let me know. I don't feel like looking for it right now. But something else to point out is his voice. I know, all of the animals in this show are voiced by real people, but I can't help but notice it. He just really sounds like a human too. (And I'm PRETTY SURE Santa wears white gloves and not red.)
So that is my dumb theory. Hope you liked it! If there is anything I missed, please let me know!