I think what you mean is Equus quagga. Similar to a zebra, and native to africa, the Quagga was killed by overhunting, for meat and skins. Its pelt was prized for its distinctive markings, and it was...
White tigers are not extinct. A few remain in the wild, and there are over 200 in the world, mostly in zoos. There were never a lot of white tigers, and humans hunted them and their orange brothers...