The coldest of these regions, the North Asia Region is also known as Siberia. Northern Asia refers to the vast northern part of Asia east of the Urals. Covered with snow for most part of the year, this area is inhabited by the fewest number of people. It is more known for its Siberian Tigers and Husky Dogs. This area is mostly in Russia. The term Central Asia refers to a region in Asia between the Caspian Sea and Western China. Central Asia includes Afghanistan, Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, and Uzbekistan.