Endless play fun - The cuddly KONG® TenniShoes dog toy rewards dogs with integrated balls and long playtime fun. The four dangling tennis ball legs move in unpredictable ways, encouraging dogs to instinctively shake or twist the toy. The integrated squeakers encourage playfulness and increase the fun factor. Note: Please never leave the pet unattended while playing. No toy is indestructible. To prevent injuries, the toy should be checked regularly for damage or loose parts and replaced if necessary.