The Nulyoo Pet Puzzle Toys are perfect for training your dog or cat to seek out foods. Made of durable, eco-friendly PVC material, these toys are bite resistant and can withstand the usual energy your dog or cat puts out. The toys have multiple pieces that can be used to create different puzzles, and the turning and linear movements make it easy to train your pet to find the hidden food. With a 100% permanent replacement guarantee, you can be sure that you’re getting a quality product.