If the mother is a shephard and "something else" and you don't know what the dad is, then you have plethora of possibilities. Very cute pup, but I don't even see the shephard in her, maybe the mother's "other" is coming through. And as far as the Blue Tick - lots of breeds have that color markings. My husband once had a Beagle that was Blue Ticked - and your pup reminds me a little of her pics. I would guess that you have some sort of hound in there. Long ears, sad eyes and the general markings. Very, very cute in any event.