This mass is an example of melanoma. This is an aggressive skin cancer of dogs that is very serious. Please refer to the article below for more information on melanoma. A visit to your vet is therefore strongly recommended if your dog has a mass that resembles this one. If you still seek further information, please visit our
Ask The Vet page to submit a one on one consultation with a licensed veterinarian 24 hours a day, 7 days a week.