Keep your dog active and entertained with the KONG Corestrength Tie Dog Toy. KONG CoreStrength is built to last and is sure to bring excitement while providing extended play sessions along the way. The durable KONG-crafted multilayered core stands-up to long-lasting chew sessions while meeting a dog’s natural chewing instincts. The reinforced layers within the core add extra toughness making it great for chewers. The exterior textured words add to the fun and have the added benefit of cleaning teeth and gums.