Two Shetland Ponies named Cruachan and Islay are used as regimental mascots for the Royal Regiment of Scotland. There have been three Shetland pony mascots in the Argyll and Sutherland Highlanders, all called Cruachan (IV). The pony and his mate are looked after by a "Pony Major" whose duties include their welfare and leading Cruachan during his many appearances at Highland games, fairs, military parades and annual Edinburgh Tattoo. The first, Cruachan I (1929 - 1939), formally became the Regimental Mascot in 1929 when he was presented to the 1st Battalion, The Argyll and Sutherland Highlanders by Her Royal Highness Princess Louise, Duchess of Argyll. The third Cruachan retired in 2012 and will be replaced by the fourth. After the Scottish regiments merged to become constituent battalions of the Royal Regiment of Scotland, Cruachan was adopted as the regimental mascot. The current mascot is Cruachan IV.