Leopard horses lived in the Stone Age

Black spotted horses may have lived in Stone Age

source: New Scientist vol 212, no 2838, November 12 2011 p19

Black spotted horses may have lived in the Stone Age, rather than being a recent variant. They are depicted in murals in caves at Peche-Merle, France. Arne Ludwig from Germany's Leibniz University, Berlin, found pigment genes producing spotted patterns in horses when he analysed ancient European horse DNA.
HO,BC