The Paw-zzle is an intriguing toy. Endless Entertainment for your dog as he tries to extract the trapped inside ball from its hard, tough shell. The more he tries, the more the ball wiggles and wobbles. Made in the USA with your pet’s safety in mind. Molded of hard, thick polyethylene plastic. Size appropriately for your dog. Purchase a size that is slightly larger than your dog’s mouth. The toy should be large enough that the dog cannot fit the ball into his mouth.