This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Kawa-uso (Japanese)
In Japan, kawauso are river otters, and like many other animals it is believed that once they reach old age they can develop supernatural powers and become yokai. They are renowned shape-shifters and can accurately mimic sounds, using this ability to play tricks on humans. They also enjoy putting out lanterns and leaving travellers in the dark. Fortunately they are far more playful than dangerous.
Kawauso, are creatures deeply rooted in Japanese folklore. Their appearance is closely tied to the natural environment in which they reside. Kawauso resemble real river otters in their physical appearance but are often larger and may possess distinctive features that emphasize their supernatural nature.