Coloursided White Back or Wiltrik

Cattle

Colour-sided is a colour pattern of domesticated cattle. It is sometimes called lineback. It consists of a dark body colour, with white finching along the spine, white under the belly, and often white also over the tail, head and legs. The ears, nose and feet are generally dark. The pattern may occur in many breeds, but some breeds are consistently colour-sided, including Longhorn cattle, Irish Moiled cattle, Randall cattle and Lineback cattle. The dark colour may be any solid colour such as black, red or brindle.

http://en.wikipedia.org/wiki/Colorsided