Nikolai Sergeyevich Valuev is a Russian politician and former professional boxer. He competed in boxing from 1993 to 2009, and held the World Boxing Association (WBA) heavyweight title twice between 2005 and 2009. Standing at a height of 2.13 metres (7 feet 2 inches) and a peak weight of 151 kilograms (333 pounds), Valuev is best known for being the tallest and heaviest world champion in boxing history.
Around 2.16 million living animal species have been described—of which around 1.05 million are insects, over 85,000 are molluscs, and around 65,000 are vertebrates. It has been estimated there are as many as 7.77 million animal species on Earth.
