Treat puzzle for your dog! This unique toy is designed to be assembled like a puzzle. The balls can be easily filled with your dog's favorite treats, but it will be quite a challenge to get them out again! It can also be used to put kibble in to prevent gulping and to mentally challenge your dog. Mental stimulation Made of durable material Cleans your dog's teeth Size S - for dogs up to 9 kg Size L - for dogs over 18 kg Color is delivered assorted.