It will take about a week for the dog's subcutaneous congestion to disappear, but the owner needs help to deal with it, so that the dog can recover faster. First, apply cold compress to the bruised area for one day, and then apply hot compress after two days to avoid discovering the bruise. Direct heat application may aggravate the condition. Pay attention to the temperature when applying hot compress and do not overheat. Apply for about 15 minutes each time.