Although incredibly popular, white tigers are also very controversial. They are often born with deformities, such as misshapen bones, club feet, crossed eyes, and sometimes have kidney and tendon problems.
Scientists expect that many of these problems are due to inbreeding, though some may be caused by the white fur gene itself. Because white tigers are more likely to be born with these problems, some zoos have chosen not to breed them, and will not include them in their exhibits. They claim that breeding these animals is inhumane, done simply for popularity to encourage people to visit the zoo.
Others argue that because white tigers live in captivity, there's no real danger due to these problems. But for many animal rights supporters, this isn't enough, with many saying they should not be bred together at all.
Because white tigers are so popular, it is very likely that most zoos will continue to breed them, so that future generations will be able to enjoy them too. Whether or not white tigers will ever exist in the wild again is another story. Because tigers are so rare in the wild anyway, it's most likely that white tigers will only ever be found in captivity, which might be the only way for them to survive.