My Dog Has A Hard Bump On His Head. It’s important to discuss any new lumps with your veterinarian so they can be appropriately diagnosed. Other names for the bump include:

Hi my cocker spaniel has a large hard bump on his head and a smaller one on his nose that do not seem to bother him at all but appeared suddenly. I'll do all i can to help. This can result from trauma to the mass, poor blood supply to the tumor causing necrosis of the tumor or be associated with certain types of cancer.