Material preparation is relatively easy. It mainly refers to purchasing some pet supplies related to training or helpful for training. In addition, some food used as rewards also needs to be prepared.

　　Common items include retractable leashes, dog chains, collars, fences, sprayers (or water guns), muzzles, control chains, toys, high-pitched whistles, etc. Retractable leashes, collars, dog chains, control chains, and muzzles are tools to control dogs during training and outings; fences help dogs quickly familiarize themselves with new environments; sprayers, toys, and high-pitched whistles are used to attract or distract dogs' attention during training, while toys can be used as rewards because dogs love to play. Snack foods basically include pet biscuits, carrot slices or fruit slices, and foods that dogs usually love to eat.