Cancer is scary, but being proactive about your dog's health is your best chance to. How often you check your dog for skin cancer will increase as your dog ages
Melanoma occurs more frequently in dogs with dark pigmented skin. Cutaneous melanoma tumors are usually solitary and appear as small brown/black masses. They can also appear as large, flat, or wrinkled tumors.
Melanoma. Melanomas are dark brown or black in color and they look a lot like a mole. These marks can appear on the eyelids, nail bed, mouth, or skin. While some are benign, others are malignant, so it's important to check in with the vet since appearance alone cannot reveal reveal if the tumor is malignant or benign.
When you see black spots on your dog skin, you need to go to the vet especially if you see hair loss, bleeding, bumps filled with fluid, or crusty skin.