The national animal of Scotland is the unicorn, a mythical creature with a white horse-like body and a single spiraling horn. The unicorn is a symbol of purity, innocence, masculinity, and power in Celtic mythology. It was first mentioned in a long lost book about India about 400 BC and eventually adopted as Scotlands national animal in the 15th century. Prior to the Union of the Crowns in 1603, Scotlands coat of arms was supported by two unicorns. However, when King James VI of Scotland also became James I of England, he replaced one of the unicorns with the national animal of England, the lion, as a display of unity between the two countries. Scottish unicorns in heraldry are always shown with gold chains wrapped around them, which is believed to be a way of showing the power of Scottish kings – that only they had the strength to tame the untameable. Although unicorns are mythological, Scots have always felt drawn to what they represent.