In legends, the Baku(Baku somnicibus.) is the devourer of nightmares. In reality, it merely has a calming effect on people.
They are 3 feet long and 1 to 2 feet high. Bakus are like a tapir with the trunk of an elephant, the tail of an ox and the paws of a tiger. They are shy but live close to humans. Whether they have contact with lung dragons is unknown.