EDIT: I'm going to create a website
with more details about this topic
ㅇ Baeksaseum : a white deer that can run 5000 miles a day.
ㅇ Bonghwang : a mythical bird superior to normal birds; it is composed of the beak of a rooster, the face of a swallow, the forehead of a fowl, the neck of a snake, the breast of a goose, the back of a tortoise, the hindquarters of a stag, and the tail of a fish.
ㅇ Bulyeowoo (불여우) : a fox living for a hundred years becomes a fire fox.
ㅇ Chollidongigae / Manlidongigae : dogs who can run 1000/10000 miles a day.
ㅇ Chollima (천리마) : a winged 'thousand-mile horse' that no mortal man can ride.
ㅇ Dokkaebi / Tokebi (도깨비) : a spirit type that changes from old things at night. Grotesque- & frightening-looking but humorous 'goblins' playing tricks on bad people.
--- Cham : a mischievous Dokkaebi that loo