Material: Made of natural fiberboard is sturdy and eco-friendly. Brain Training: Dog puzzle filled with Challenge but not too frustrated is great for dogs of all ages, breeds and sizes. The hide and seek design encourages your pet to solve problems Behavior Training: Whistle and clicker can be used to train your Lovely dogs the basic obedience, tricks, and to correct bad behavior.it scientific safe and easy way to training your dog. Fun Together: This training set help you train your dog while bring fun for you and your lovlely dogs. Pls supervise when training , and don´t let the dog chew the toy.