Wikipedia
Mussie, also known as Hapyxelor or Hapaxelor, is a cryptid, an animal whose existence is the subject of folklore but has not been proven, that is rumored to live in Muskrat Lake in the Canadian province of Ontario. The creature's age, gender, and physical appearance are not agreed upon; it is variously described, for example, as a walrus or as a three-eyed Loch Ness Monster-like creature. It is also not agreed upon whether Mussie is a single creature or a species.
The legend of Mussie likely began around 1916, though folk tales claim that Canadian pioneer Samuel de Champlain wrote about it in the early seventeenth century. Despite the futility of numerous attempts to locate or capture Mussie, it has become a part of the local culture and a fixture in the local tourism industry.