Starmark Snapper Trapper toys are new treat dispensing toys for dogs looking for a challenge. Made of our proprietary virtually indestructible material, they have been tested dog tough for strong chewers. The interlocking teeth help secure treats inside and release them as dogs chew. They fit most small treats or kibble inside, or freeze them for a cool treat. Toys also float in water for retrieval fun. Dishwasher safe for easy clean-up. Three sizes: large for dogs over 40 pounds, medium for dogs under 40 pounds, and small for dogs under 15 pounds.