9 of 23: A two-day-old white lion cub playing with its mother Sumba, in Belgrade Zoo, Serbia, Thursday, Dec. 22, 2011. The four white lions cubs, an extremely rare subspecies of the African lion were recently born in Belgrade Zoo. White lions are unique to the Timbavati area of South Africa and are not albinos but a genetic rarity. (AP Photo/Darko Vojinovic) (AP Photo/ Darko Vojinovic)

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