i see pure pit, to be honest. and a GORGEOUS one at that! i don't see any boxer at all (head, eyes, ears, frame, stance) and no mastiff cuz at 6 months old and 45 lbs, that is pit size. i actually met a couple of pure pits that were a spitting image of ruckus, but one was quite large (80 lbs adult male). there is so much variation within the "breed", rarely do two individuals look alike actually....
