[QuickSilver]

Okay, Thor will now roll over on his own reliably. I need some help on how to clarify the command, though.

To get Thor to Roll Over, I show him some treats, then I do a play bow in front of him. If that doesn't work, I say "Roll", which he seems to think means "Down". Once he's down, he'll usually roll over unprompted after a few seconds. He definitely knows it's the roll that gets him the treat.

Does anyone have any advice on how to get this trick going smoother? Obviously I'd like to be able to command him to roll when I myself am not crawling on the rug alongside him. Also, he won't go from a standing position to a roll. He seems to think it's two parts, Down, then maybe Roll.