Interesting stuff Blacktabs, from what i've read when he got his 'Merle' dog it sounded the end of that line he kept, shame too, as by the sounds of it the only thing the old stuff couldn't do was make the money the collie stuff could, when him and Hancock started a 'Dynasty'
There was a dog in Liverpool bred directly out of Woolybear (Merle x Fathom) in the early 's, Sonny was its name, big ugly brute, had one hell of a reputation, good all round grafter and iron hard, nasty with it too, got out once and killed a Doberman in a local shopping area!