The document discusses Siberian tigers, noting that they are the largest subspecies of tiger and can weigh up to 660 pounds. It explains that Siberian tigers live in both steamy jungles and icy cold forests, and that they typically hunt alone as a single tiger can sneak up on prey more easily than a group. The document also states that Siberian tigers eat a variety of animals, from small prey to survive to larger animals like bears, and that they will cooperate with each other to find food if it is scarce.