Zuba - White tigers are hunted by poachers and used for Chinese medicine. The white tiger is not a species unto itself so cannot be classed as endangered. It is a genetic flaw of the Bengal tiger, and extremely rare.
Introducing Three Siberian Tiger Cubs Named: "Sayan" "Altai" & "Altay." Seen here with their Mom: "Nika." Howletts Wild Animal Park in Bekesbourne, England. The cubs are named after mountain ranges in Siberia.