I've dug into some of the past forums here on the skin spot issues, but I hadn't seen anything quite like what my almost 13-year-old male has. He's a black & white tux and over the years has had multiplying freckles and moles. He loves the sun, so this is no surprise. Within the past couple of years, he's been getting much larger black spots. In the past few months, they've seemed to multiply all over -- about 12 now. They are all flat but the amount and the seemingly fast spread has me worried. Are they age spots? Something else completely? He also seems to be getting bonier -- but feels the same weight. Otherwise he's just a grumpy, sleepy old man cat, as I lovingly call him! Everything else is fine health-wise, and he's rarely sick. I've attached photos of his back, tail, shoulder, and a close-up of the big spot near his hindquarters. (The white patch you see between his shoulder blades is an old scar). attached.