White Tiger

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

A white tiger's pale coloration is caused by the presence of a recessive gene. Another genetic characteristic makes the stripes of the tiger very pale; white tigers of this type are called snow-white or "pure white". White tigers do not constitute a separate subspecies of their own and can breed with orange ones. Although, assuming the orange parent is heterozygous dominant for the recessive gene, all of the resulting offspring will be heterozygous for the recessive white gene, and their fur will be orange.