A manbeast is usually used to describe an ugly woman, who doesn't wash smells funny, and cna be Portugese when used in the School Yard.
Ex. Imagine a teenage girl with cat ears, a cat tail, paws, and feline insticts. That is a cat-manbeast. (Google them.)
Examples are Tewi Inaba, the Earth Rabbit, and Chen, the Cat of Black Omens, from the Touhou series.
Any previous assinine definiton of a manbeast being an ugly or hairy woman is completely retarded and whoever was stupid enough to write or believe it has some serious issues.
Or better yet, I wish I were a cat-manbeast! X3