A dog peered out of a porthole on the side of a ship on the Yenisei River in the Siberian city of Krasnoyarsk. It is likely he quickly withdrew -- the temperatures dropped to minus 26 degrees Celsius (minus 14.8 degrees Fahrenheit) in Krasnoyarsk on Thursday. The Yenisei River is one of the longest rivers in Asia, rising in the borderland between south-central Russia and Mongolia and flowing along the edge of the West Siberian Plain to the Kara Sea.