High quality material: This dog toy is made of eco-friendly and safe rubber, which is non-toxic, soft, resilient and bite-resistant for your dogs to grind and brush their teeth. Size 4.3". Adjustable Opening: The treat ball can put your pet's favorite kibble or small treats (diced carrot, dried fruit or herb) into the hollow ball and adjust the opening to fit to control the flow of goodies. Let pets enjoy interactive eating and slow feeding. Ideal food container for cats and small dogs. INTERACTIVE AND FUN: Indoors or outdoors, this small dog toy allows you or your family to interact with your dog. Let your dog become more lively, enjoy the fun while increasing the happy feeling. Increases IQ: The dog chew toy is not only an interactive IQ treat ball toy that eliminates boredom and destructive behavior through healthy play and exercise, but also a fun puzzle play ball to keep your pet mentally and physically stimulated. Maintains your dog's physical alertness. Product Descriptions 1. Non-Toxic Material: This dog toy is made of natural durable rubber material, non-toxic, soft, resilient and bite-resistant for your dogs to brush their teeth . 2. For entertainment: A good toy ball can accompany dogs and distract them by themselves when they are home alone. Play with it. Dog will reduce damage to furniture. 3. Perfect Gift: The pattern of bones and bright color will attract your pet's interest. Strengthen the bond between you and your sweet dog. Perfect for retrieving and interacting with your dog. They can put food or treats in the grooves and this can keep them busy for hours. 4. Teeth cleaning: soft and unique surface relief, can effectively help clean their teeth and keep their gums healthy. 5. Improves Intelligence: Your dogs' IQ can be exercised and improved while biting this toy ball. Specifications: Material: natural non-toxic rubber. Diameter: 10.9 cm. Color: Red. Package content: 1 piece. Your attention, please 1. Not for heavy chewers. This interactive dog toy is only suitable for small or medium-sized dogs or cats, not suitable for aggressive large dogs, please choose the appropriate toy according to your dog's temperament and size. 2. To ensure safety, should Your dog should be supervised when playing with toys. 3. Check the toy regularly and remove it if damaged. 4. This toy is NOT a child's toy