A long time ago, when I was a young lad, I had the acquaintance of a dog called Seumus.
Now Seumus was of, shall we say, indeterminate lineage. There seemed to be a fair bit of black Labrador in there, but it was mixed with some distinctly non-pedigree characteristics, including a tail that curled over his back. When Seumus was feeling full of himself, he carried this high and showed to the world his anal sphincter. I’m sure that’s not in the Labrador breed book.