Charlie has a couple of squeaky balls that he plays with. I got them at Tractor Supply. Only place I found that particular style. I ask him "Where's your ball? Go get your ball." He looks all around and when he spots it, he gets this look on his face like "Wow! I found it!" and pounces on it. When he gets tired of chasing it down the hallway, he just refuses to bring it back to me. I got him a tennis ball once but he doesn't like the texture in his mouth. He's scared of Frisbees. He destroys stuffed animals too quick. I quit getting them because I hated cleaning up the stuffing after it was scattered all over.