Siberians, biggest of the big cats

Siberian, or Amur, tigers are the largest cat in the world They get their name from Russia’s Amur River

Only 540 are left in the world after being driven to the brink of extinction by poachers

Natural habitat is in Far East Russia, northern China and parts of North Korea

Prey on deer, moose and small bears

Have killed humans – including a zookeeper at a German zoo in 2013

They can eat up to 60lb of meat in one go

They live alone and aggressively protect their territories

Females have litters of two to six cubs, which they raise alone