After the dog is kept in captivity, it is best to let it out twice a day, preferably for more than 30 minutes each time, so that the dog has enough time to urinate, play and run wildly. Keeping a dog in a cage can increase the dog's sense of security and ensure the safety of the dog. If the owner is afraid of the dog running around or tearing down the house, he can keep the dog in a cage. However, the dog must be allowed to come out to play every day, otherwise it will last for a long time. It will cause the dog to feel depressed and become aggressive.