Safe material-- The Dog Puzzle Feeder Ball Toy is made of high-quality PVC material, safe and non-toxic, easy to cleaning, and can be used by puppies with confidence. 7cm Suitable for puppy or medium dog. Dog Puzzle Feeder Toy Ball-- Dog treats are in the feeder ball toy. The puppy needs to constantly treat and flick the feeder ball before the dog foods will come out. This increases the fun of the dogs and also training the puppys IQ. It is a Dog Puzzle Toy Ball for dogs. Fun training toy ball, slow down the diet-- The Dog Puzzle Feeder Ball Toy can slow down the feeding speed to prevent the puppy dogs from overeating and help the dog digest, and training your puppy dogs in an orderly posture. It is the best puzzle toy for dog training. Intelligent design-- The treat outlet of the dog puzzle feeder ball toy can be rotated 360 degrees to control how much dog food or dog snacks are poured out, making the puppy dog feel happy while busy.