With mounting evidence it seems likely that there may in fact be a few relict populations of Sabre-toothed Cats surviving in modern times. However, until science can gain irrefutable information regarding their existence, Sabre-toothed Cats will remain victims of the mass extinctions of the Ice Age.
Works Cited:
"Cryptozoology A to Z" By Jerome Clark and Loren Coleman
"The Unexplained" By Dr. Karl P.N. Shuker