Hives
Hives on dogs, known medically as urticaria, are similar to those on people. Hives may appear as a rash of round, red bumps or as a collection of round or oval, raised bumps on the skin that itch. The underlying cause is a reaction to an allergen such as a bee sting or contact with a plant. Hives often resolve on their own if the case is mild; however, sometimes your veterinarian will want to administer an antihistamine or steroid to provide relief.
Melanoma
Canine melanoma tumors result from unchecked growth of pigment-carrying cells known as melanocytes. These masses can be malignant or benign, so if you find one on your pet, you’ll want your veterinarian to evaluate it immediately. Melanomas of the skin, which are not caused by sunlight, tend to be benign and readily treatable through surgery, while very aggressive melanomas tend to grow around the mouth and on legs.
Find food that fits your pet’s needs
If you find yourself worrying about finding a lump on your dog or wondering what the lump under your dogs skin is, try not to panic — there are many possible causes for lumps on your pet. While dogs can develop cancerous tumors, if you find a growth on your dogs skin, many are treatable. A lump or bump can even be as simple as an inflamed hair follicle.
The most important thing for you to do is stay alert to any lumps on your pooch and let your veterinarian know about them; that way, they can determine if treatment is necessary.