Kasper, right, a three-month-old white lion cub, plays with zookeeper Nadja Radovic's hair in the lion's enclosure at Belgrade Zoo, Serbia, Wednesday, March 18, 2009. The cub, an extremely rare subspecies of the African lion, was born December 9 in Belgrade Zoo. White lions are unique to the Timbavati area of South Africa and are not albinos but a genetic rarity. [Agencies]