Makes me smile people talking about the various cross mongrels, the reason is its all been done before, no matter what crosses we may think of, its been done either deliberate or accident.
I've seen everything from Pink Puddle whippets to Great Dane Greyhound lurchers, the latter was one of the best big game done I seen, sadly a tale for private ears. so here is a photo I scanned of one of the talked about Xs, notice one merle. Sorry could only find pup photo, the red ended up pig tailed.