Largest species
The Siberian tiger is the largest tiger in the world. It was also found on northeast mainland, and it is called the dongbei hu () in Chinese. Sometimes it's called the Amur tiger. The Amur is a river that divides northeastern mainland from Siberia.
Scientists think the Siberian tiger is the same as the Caspian tiger. The Caspian is the biggest inland sea in the world. The Caspian tiger was found in Iraq, Turkey and other places around the sea. Most people think it is extinct. The Siberian tiger is almost extinct - there are only about 200 in the wild, and there are about 250 in zoos across the world.
Hunting machine
The Siberian tiger is about 1 metre tall and 2 metres long. They are hunters, or predators. This means they only eat meat. In the wild, they mostly hunt for wild boar. But they also hunt gazelles and deer.
Sometimes the Siberian tiger would attack and eat bears. But bears are very strong animals, so that does not happen often. There are records of Siberian tigers attacking bears and getting killed themselves. Interestingly, Siberian tigers hardly ever kill people. The Bengal tiger in India does - they become 'man eaters'.