I have a mini pin who WILL NOT play with toys. Not squeaky toys, or ropes, balls, or stuffed animals. NOTHING. I thought it was the craziest thing! He was just bored. Have you tried a treat ball? All dogs have "currency" that they will do anything for. Mine turned out to be his favorite treats, I put them in the ball and he will "play" with it to get the treats out...find out what your dogs "currency" is and you will find a way to get him to play.