Thinking he's 3/4
German Sheppard cause the mom is pure breed and the dad was a mix of Sheppard plus Collie/Hound but a parent of the father was a pure breed. So she's thinking he's likely 3/4 Sheppard which he looks pretty much like a pure breed. His nose though shows of the mix [think more hound looking]
Picture is giant but here
took these this morning while dog-sat him for an hour