This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Shisa (Japanese)
Shisa is a traditional Ryukyuan cultural artifact and decoration derived from Chinese guardian lions, often seen in similar pairs, resembling a cross between a lion and a dog, from Okinawan mythology. Shisa are wards, believed to protect from some evils. People place pairs of shisa on their rooftops or flanking the gates to their houses, with the left shisa traditionally having a closed mouth, the right one an open mouth.
The open mouth shisa traditionally wards off evil spirits, and the closed mouth shisa keeps good spirits in. Like the komainu ("lion dogs"), the shisa are a variation of the guardian lions from China. From the Edo period, they started to be called "guardian dogs" in general in mainland Japan. Gender is variously assigned to the shisa