《山海经·山经·南山经》
山中有一种野兽，外形像野猫却长着像人一样的长头发，名叫类，这种野兽雌雄共体，人只要吃了它的肉就不会产生妒忌心。
有兽焉，其状如狸而有髦，其名曰类，自为牝牡，食者不妒。
There is a kind of beast in the mountain that looks like a wild cat but has long hair like a human being, called Lèi. This kind of beast is hermaphroditic. People will not be jealous if they eat its meat.