WORLD'S STRONGEST RUBBER DOG TOY! NOW BEING USED WORLDWIDE BY POLICE K-9, DRUG ENFORCEMENT, AND MILITARY K-9 TEAMS; SCHUTZHUND AND AKC COMPETITION TRAINERS AND MANY MORE. SUPERVISED USE IS STRONGLY RECOMMENDED FOR POWER CHEWERS! KONG STUFF'N TREATS AND PASTES WORK GREAT TO INITIATE PLAY SESSIONS.