A bit OT, but I always found it fascinating that all dogs are descended from grey wolves. I mean... Chihuahua and Great Dane... blows my mind.
Actually recent research suggests they are descendants of a type of wolf that no longer exists, not modern grey wolves. Though Native Americans' dogs apparently were descended from grey wolves (one would assume, anyway)... of course, those dogs seem to have left no DNA traces at all in the genetics of modern dogs.
Read an article about it, I think in an older National Geographic. It was interesting.
I kind of wonder if the extinct wolf might have been the dire wolf (they were a thing), but it seems unlikely.
But yeah, I think the mabari are considered a "newer" breed than other dogs, since it's repeatedly mentioned they were bred from wolves. Other dogs, I guess, people just wouldn't realize had once been wolves? Well, maybe the Avvar would?