Using Katie's "play dead" instructions, Coby learned in one evening (Thanks for the tips!!). He's nowhere near as polished as Maxi yet tho!
But I taught this trick less than a week after he learned "shake", so now when we get the treats, his butt hits the floor, his paws start flapping, he lays down, and then lays flat (for dead) ---- all before I can even give a single command. He doesn't know which one I'm gonna want. So instead of waiting for a command ("how inefficient" he says), he just does them all knowing that one of them will be right.
I think we'll work on the "wait til I tell you" command since he hasn't mastered that one yet.