sturdy and durable: made of BPA-free, non-toxic and natural rubber to ensure that there is no harm for chewing. The well-designed solid rubber tire shape is more attractive for the dogs. And it is durable, tough, bite resistant and indestructible, which is very suitable for aggressive chewers. tire styling design: our chew toy can withstand hard chewing, with multiple grooves + cylindrical bumps on the surface, it can strengthen the dog's jaw by continuous chewing massage. It also helps clean teeth to reduce calculus, plaque and tartar, improve dog's dental hygiene, reduce dog teeth problems and save bills. Dog's favorite: hollow design in the middle, you can place some dog food or small snacks in it, let your dog enjoy eating while playing the toy. Add more fun and pass the boring time. Peanut butter, nutrient cream or wet food can be firmly smeared on the grainy texture surface. Allow your dog focus on licking, distracting, avoid biting, damaging furniture and get more surprises when playing. instinctive needs: healthy game is essential to the dog's physical and mental development, emotional training and behavior training. tire chew toy helps meet the dogs instinctive needs and provides mental stimulation, relieves the dogs anxiety, reduces destructive chewing, burrowing, and barking, so that your dog will not get bored and maintain a good posture, which is ideal chew toys and training props.