Have you thought about de giant variation about Airedale Terrier? (search it in Goggle as 'Giant Airedale Terrier' itself)
They have THE beard stuff (
s-media-cache-ak0.pinimg.com/o…)
And people forget they can get actually like that big:
www.askideas.com/media/22/Full…Hope it helps! If not, at least have a nice day