A dog's mouth can sometimes serve the same function as a human hand because a dog carrying things in its mouth is equivalent to a human transporting items by hand. It’s also a tool for grooming and a weapon for fighting. Utilizing this habit of dogs, you can command a dog to find shot-down birds and bring them back. Labrador Retrievers are the most suitable hunters. Whether in dense bushes and steep valleys or in rivers and lakes, Labradors are always eager to search for and carry game.

　　Dogs have used their mouths to carry things throughout history, and this instinct still remains. They sometimes bring shoes and slippers they have taken from somewhere back to the doghouse. Training a dog to fetch is an important foundation for advanced training.

　　Regularly practice hiding items where the dog cannot see them and command the dog to find them. Eventually, develop this into search training. For police dogs used to track criminals, training should start from this aspect. It’s best to begin this training from puppyhood; teaching them to fetch while playing is essential. For example, throwing a ball, having the dog chase it, and then praising the dog for bringing it back helps spark the dog's interest in the ball—this is also a very effective method because dogs are playful animals.