ooo another toh theory?????
anyway
idk how i came up with this one and i really have no explanation for it but anyway
what if barcus is a dog from the human realm but he somehow got stuck in the boiling isles??
like, theres no other creature (that i remember) that is animal-like and cant speak english in the show, and apparently jerbo is the only one that can understand him
and its possibly why he thought luz was a nice person when they first met, because she reminded him of someone from the human realm
anyway theres really no explanation or deep meaning to this but yeah