1.DOG TOYS (UNDER 90 POUNDS): this chew toy for aggressive dogs measures 3.94" x 4.49"; it helps to satisfy the instinctive needs of large dogs while easing their anxiety and encouraging healthy play. 2.DOG CHEW TOY: Put your dog's treats into the toy container and let your dog enjoy a tasty treat while playing. Effectively slows down eating, protects gastrointestinal health and makes mealtimes fun. 3.SAFE MATERIAL: The food dispensing dog toys are made of food grade high elasticity and toughness TPR, you can rest assured that your dog can use them.) 4.INDESTRUCTIBLE DOG TOY: Elastic design withstands the scratching and rubbing of large dogs, keeping your dog busy at all times. Rolling design entices your dog to chase the dog toy, chewing, fiddling and catching to release excess energy. 5.DOCTOR RECOMMENDED: Our specially designed chew toys for good chewers provide hours of mental stimulation and healthy play to help dogs: relieve separation anxiety, reduce barking, teeth grinding, reduce boredom, and circuit training.