Snow Tigers? There is no cat species known as a “snow tiger”
What are snow tigers? There is no single answer to that question, because there is no cat species known as a “snow tiger”. It could be that people are referring to Snow Leopards, a gray cat with charcoal spots that lives above the permafrost line in mountain tops at the top of the world. If that is the cat you are thinking of, you can read more about them at Snow Leopards.