| − | '''Calico''' or '''tortoiseshell''' is a type of coloring found on [[cat]]s, usually a combination of red, black, chocolate and cinnamon. The color pattern is caused by a genetic trait called X-inactivation or lyonization. | + | '''Calico''' or '''tortoiseshell''' is a type of coloring found on [[cat]]s, [[horse]]s, and [[fish]]. It is usually a combination of red, black, chocolate and cinnamon. The color pattern is caused by a genetic trait called X-inactivation or lyonization. |