白老虎ga英文

White tiger http://en.wikipedia.org/wiki/White_tiger
White tigers are individual specimens of the ordinary orange tiger (Panthera tigris), with a genetic condition that causes paler colouration. The condition is well-documented in the Bengal tiger subspecies (Panthera tigris tigris). It may also have occurred in captive Siberian tigers (Panthera tigris altaica), and has been reported historically in several other subspecies. The white individuals do not constitute a separate subspecies on their own. They have pink noses, white-to-creme coloured fur, and black, grey or chocolate-coloured stripes. Their eyes are usually blue, but may be green or amber.

They are rare in nature, but with their colouration widely considered striking, white tigers have become popular attractions in zoos and entertainment that showcases exotic animals. The magicians Siegfried and Roy are famous for having used several trained white tigers in their performances.

White tigers occur when inbreeding — usually between parents and cubs — produces offspring with two copies of a recessive gene. Although such inbreeding often leads to birth defects, the public appeal of the white tiger has, controversially, led to it becoming a regular practice in captivity[1].

There are several hundred captive white tigers worldwide, and this number increases annually. The captive white tiger population today includes pure Bengals, and hybrid Bengal-Siberians, but it is unclear whether the recessive gene for white coloration came from any of the Siberian ancestors, or only from Bengals.

White Tiger咪White Tiger囉~