Prevention
Limit the amount of time your dog spends in the sun, especially between the hours of 10:00 am and 2:00 pm, when the sun is at its highest and the rays most damaging. When you must take your dog outdoors during daylight hours, apply sunscreen to your dog's ears, nose, and other areas that are either lightly furred or colored before going out in the sun. In some cases, tattoos can be applied to light colored skin as a permanent sunscreen. If you notice any new sores or masses, take your dog to the veterinarian as soon as possible so that it can be treated immediately.