is a creature illustrated in Toriyama Sekien's Konjaku Hyakki Shūi.
It resembles a small dog covered entirely in long hair. Its name is a pun - when written with different kanji (Japanese: 希有怪訝), keukegen means "an unusual thing which is rarely seen".
According to one report, the keukegen is a disease spirit which lives in damp, dark places and causes people in the house to get sick.
. Mizuki Shigeru . Mujara 2: Chūbu-hen . Soft Garage . 2003 . Japan . 978-4-86133-005-6 . 66 .