So recently my Buff started laying down in the middle of the yard in an odd contorted way. He seriously looks dead (on his back one leg tucked to his chest the other stretched out) ... every time I walk out to him and talk he looks at me and answers but doesn't move until I pick him up. If I stand him up he'll stand there for awhile then run off. It's becoming an almost daily thing. What on earth am I dealing with?