Yes. The last genus of saber toothed cats died out 10,000 years ago. They did not leave any descendant species, either.
Sabertoothed tiger
sabertoothed tigers.
First off, it is extinct not extinced. Snow leopards are endangered.
not yet because people have not killed all the wales in the ocean so they are rarely not extinced
Yes
some might be but no they are not
No.
Cats did not evolve from sabertoothed tigers. Rather, sabertoothed cats evolved from other cats. Modern apes evolved from miocene apes, which were somewhat similar. Miocene apes evolved from some lemur-like primate, or perhaps something like a lorise. http://en.wikipedia.org/wiki/Loris
Yes, they are extinct.
because they have poos in your undies
YES
No, they are still fairly common.