LOL about the snoring! Yes, Betti snores louder than anything I've ever heard, too. It's like a rhinoceros lying in the room...some large Jumanjee beast shaking the walls all night long.
About your pup's heritage...I recently read something that made a lot of sense to me. It was about mixed breed dogs and how it is extremely difficult to tell exactly what "many" are mixtures of, because many mixed breeds come from a very lengthy lineage of other mixed breeds. Does that make sense? I have a rottweiler lab mix. I saw his mother and she was a short, English-style black labrador. The father was reputed to be a large male rottie that ran around the neighborhood..
.kind of a gigolo so-to-speak....obviously!!!!!!
But, I found that interesting to ponder the aspects of mixed breed heritage and how far back the mixing can occur, making it nearly impossible to pinpoint the exact mixture of specific breeds that make up the genetic material in one particular dog. It makes sense to me after I thought about it.
And, like the silly example of "brown eyes are dominant" that they teach in entry level biology at community college...four generations of brown-eyed parents can quite likely have a grey-eyed offspring. Genetics are funny that way...with certain traits lying dormant for many cycles, until, finally something pops up that resembles some feature of one g-g-g-g-g-g-g-g-g-g-g-grandparent long ago...such as the ridgeline of a Rhodesian ridgeback or the curled tail of a husky, or the wrinkles of a shar-pei...or the combination of such a bouillabaisse ends up producing an individual that appears to be mixed purebreds that he/she is, in fact, not.