Remove him by the scruff of his neck and say NO. You don't need to be harsh or shake him, just remove him, it's what his mother did when he did that to his littermates.
Venus of Crooked Creek 1/26/13
Otto von Hena-C 05/23/08
Morgan Donnermond 08/04/01 to 9/28/12 Long Live the Queen!
I have duct tape and I am not afraid to use it.