Tumors develop when cells in the body grow uncontrollably. Finding a tumor on your dog can be very frightening, but they are not always detrimental — some are benign, while others are malignant.

My family owns a few dogs of a fairly uncommon breed called the Glen of Imaal Terrier. One is almost 12. We noticed that he had a foul odor from his face, so we took him into our local rural ...

Humane Society of Pinellas in Florida successfully removed King the dog's facial tumor and prepared the pet for adoption Kelli Bender is the Pets Editor at PEOPLE. She has been working at PEOPLE since ...