A spike in the birth rate of white tiger cubs this year has seen Taiyuan Zoo in north China's Shanxi Province establish its own white tiger kindergarten to care for the young cubs. All the white tiger cubs in the zoo are raised by artificial feeding, because the first-time mothers that gave birth to the cubs don't have sufficient nursing experience. Therefore, the zoo has set up the kindergarten to look after the litter of cubs together. The white tiger is a pigmentation variant of the Bengal tiger. Wild white tigers have died out and most of the existing white tigers are bred and raised by people.