I think some are overlooking the fact that some of the mixes are not going to be used for traditional earth work, I don't want to speak on behalf of Main or any other in the US but if you use a pure Patterdale for coyotes or large game you will be sending your dog to its death. I have noticed that the crosses that I have start as early as any, It nice to have a dog you can rat with, then take and catch a feral hog. Most of the guys in the states want mute dogs and game bred pits are still plentiful, its a matter of getting a line of smaller pits and well bred patts. Selection, hunt, ,culling,