Apparently the tradition English otterhound is in decline. This set me thinking about old breeds of dog. In 'Macbeth' Shakespeare mentions 'hounds and greyhounds, mongrels, spaniels, curs, shoughs, water-rugs and demi-wolves.' Some of these are still around, even if a King Charles spaniel looks different to the strange furry white creature seated at the front of the picture of Queen Elizabeth dancing the volta http://en.wikipedia.org/wiki/File:Rober ... ancing.jpg
Greyhounds and wolfhounds were also dogs for the elite, but there are pictures of watchmen and the like with hound-type guard dogs, so what would be most appropriate out of modern breeds to suggest the old types? Could we get away with a cross between an Old English sheepdog and an otterhound for a shaggy shough? Could a demi-wolf be an alsatian/husky cross? Could a water rug be a cross between a springer spaniel and, well, a rug? (Or poodle)
Looking at photos of Victorian/Edwardian farmers, their sheep or cattle dogs look very different from collies today, and that wasn't very long ago, so we may never know what a Tudor mongrel might look like except if archaeology gives us the bare bones, like the little dog from the Mary Rose. What's your best guess?