The White Tigers are today as rare as it can get. From what I learnt  it is the pigmentation variants of the Bengal Tiger and  they definitely are not Albino or a separate species . They occur when two Bengal Tigers carrying a recessive gene controlling coat color are bred together.   

They are indeed one of the most popular exhibits at any sanctuary or Zoos. These rare species are splendid Crowd pullers. To gather more facts about them . Click here. Meanwhile check out their beautiful  splendor in these captures from two different exhibits in Texas, U.S.A.