Best Pet Supplies - TPR Rubber Spiny Ball with Squeaker Dog Chew Toy Made with food-grade thermoplastic rubber (TPR) and is BPA-free and phthalate-free Contains squeaker to prolong interactive play Especially shaped to promote chewing which improves oral hygiene Suitable for small/medium select one depending on the size of the toys, breeds of dog who likes to play-bite. Not recommended for aggressive chewers.