How endangerd are snow tigers?

Answer 1

I guess "nonexistent" is pretty endangered ...

If you mean snow leopards, they're considered "endangered" by the IUCN (on a scale that goes "extinct", "extinct in the wild", "critically endangered", "endangered", "threatened", "vulnerable", "least concern" where "least concern" can mean anything from "there seem to be enough of them" to "there's too darn many of them").

If you mean white tigers ... there are no known white tigers in the wild. They're not "extinct", though, because white tigers are just Bengal tigers that happen to be white; the gene for "whiteness" is recessive, so white tigers are uncommon unless they're specifically bred for, and white tigers have disadvantages compared to their orange littermates (a defect in the visual portion of their brain makes them tend to be clumsy until they learn to compensate), so it's unusual for a wild-born one to survive to adulthood. Bengal tigers generally are also listed as "endangered" by IUCN.