First, let dogs contact people. The reason why our dog is easily disturbed by the crowd, which leads to aggressive behavior, is probably because it has less contact with people, so we should take the dog out for a walk on weekdays.

Second, establish your authority in front of the dog, so that once the dog wants to bite, once you reprimand it, it will be willing to follow your instructions.

Third, let the dog realize that biting will bring harm to people. For example, if you come into contact with a dog and it wants to bite you, you can pretend to be injured and let the dog know that biting will bring bad consequences.

Fourth, let the dog realize that biting will be punished, so that it will not bite casually. For example, if a dog bites at home, you can directly spray water on the dog with the nozzle of the kettle.