Housetu Sato is an instructor at the Japan School of Wool Art in Tokyo. At such an unusual school, it’s not hard to believe that the students are producing some unusual work. The latest? An enormous and realistic felted wool cat head. The cat head/mask will soon be on exhibition at the Metropolitan Art Museum in Tokyo, but before Sato’s students submitted it, they had themselves a little bit a fun. Check out the pictures below, but be warned: This may interfere with your ability to sleep at night.