Material: Silicone, Natural Rubber - Strong Teeth: The soft and unique surface relief effectively cleans teeth and keeps gums healthy. - You can put food or treats in the grooves to keep your dog entertained for hours. - Improves intelligence and IQ training Dog toy ball, non-toxic bite-resistant toy ball for pet dogs, puppies, and cats, dog food treat feeder toothbrush ball, dog pet chew toothbrush ball, pet exercise game ball, IQ training ball 41-48 2669