Here is your number one companion – cute, talented and loyal. He can sit, lie down and roll over. Try giving him a pet and watch how he responds. Keep your dog entertained by playing ball or giving him a bone. Reward him by giving him a treat. To get him to sit, double-click your mouse on the ground close to him. Double-click again to get him to lie down. Then hold your mouse button down and make a circular motion to tell him to roll over.