You can apply Yunnan Baiyao on the dog's wound, but it is best to use pet-specific medicine to prevent the dog from feeling uncomfortable. When cleaning the wound, put an Elizabethan collar on the dog to prevent the dog from overreacting and accidentally injuring himself. During this period, the dog can be given improved diet and nutritional supplements. If the dog does not cooperate, you can take the dog to the pet hospital and ask professionals to deal with it.