White lions are a rare color mutation of the African lion. They are not albino; they are leucistic, which is lack of dark pigmentation. They get their coloring from a recessive gene known as a color inhibitor. To produce a white lion, both parents must possess the recessive gene.
Two male white lions and two female white lions were presented to the Cincinnati Zoo from Siegfried and Roy in 1998. The males, Sunshine and Future, and the females, Prosperity and Gracious, take turns in their outdoor enclosure and can be seen on alternate days.