When you are brushing and grooming your dog, check for any unusual lumps or bumps. Don’t automatically assume that a lump or bump is cancer. A small, rounded bump may The lump may be a lipoma if it is small and rounded. Lipomas are fat deposits under the skin that are not painful or harmful. They usually don’t need to be removed unless it chafes and irritates your dog. Lumps or bumps may be tumors or cysts cause by a clogged oil gland or an infected hair follicle. Removal may be indicated especially if they get larger. Some lumps on your dog can indeed be benign or malignant cancer and need medical attention. Lumps that spread and grow quickly or they are found around the breasts or testicles are of particular concern. If you find a suspicious lump on your dog, make an appointment with your Glendale, AZ veterinary clinic for evaluation and treatment.