Siberian Tigers eat deer, wild boar, and lynx. and meat Tigers in general eat meat seeing as they are carnivores. Their diet can consist of cows, buffalo, fish, antelope, and around any other kind of meat. the same
Snow tigers and Siberian tigers are very much the same, although they are different in some ways. Snow tiger's are found in the snow, and Siberian tigers may, may not be found in the snow. Other than this, the snow tiger and Siberian tiger are the same.
None. Siberian Tigers are apex predators. Siberian Tigers are among the top predators on earth, so they are not prey to any other animal (but if you are counting humans as animals, then humans could eat the Siberian Tiger).