Siberian Tiger who is also known as Amur Tiger is thought to be the largest tiger in the world. They are called Amur tigers because they are found mainly along the Amur River in eastern Russia. The weight of male Siberian tiger varies from 400 to 700 pounds while of female it varies from 200 to 300 pounds. Siberian tigers are recognized by their reddish-orange coat white a belly and black stripped marking. The pattern of marking is unique of every tiger. They have heavy muscular forelegs and are known for their speed. Life period of Siberian tiger varies depending on the conditions and environment; in the forest their lifespan is 15 years and in a zoo they can live for 18 to20 years. A well grown Siberian tiger can be 10 to 11 feet long. The cubs of Tigers live with their mother for an age of 18 months almost. This biggest tiger in the world is only found in Siberia, other tigers in India and Sumatra are not as bulky as these tigers are.

Siberian tigers spend their day staying swimming in rivers and ponds trying to make themselves cool. They begin hunting and look for prey after the sunset. They are generally not good hunters; wild tiger will make 20 tries before being successful. Serbian tigers were on verge of extinction in 1940 but thanks to Russian incorporation with several other wildlife organizations their population recovered and is stable now.