I brought two police dogs. The first one is called a ball. Qiuqiu is not a qualified police dog and his obedience is not very good. When it is taken out to perform a task, it will be very excited to see other puppies, and then it will be very obedient and will not listen to the command. What bothers me most is unsanitary. Our kennel is divided into rest area and activity area. The ball will be pulled everywhere, and it will not avoid Baba when it moves, and then it likes to jump on me when I open the kennel and let it out. So this is actually a headache, and spending a lot of time teaching and training is not very effective. Qiuqiu was one year old when he was with me, which may be related to his being an accelerating dog. (His previous owner finished the exam in a month or two because he had to take the certificate of police dog trainer, so he was not mature enough. Then the unit sent it away.