Oh thats a tough one, i dont like it but ive seen a major community divided over it before. It comes down to not the art but the size of the furry community, they are more prolific in general, so theres alot more of it, but the genre is not really understood by the general art community, which is comparitivley smaller in terms of posting. So we decided against it here, to keep moderating easy, and since there are likely already other dedicated communities for that anyway. I hope that makes some degree of sense. I dont mind linking a good furry community on the side bar near that rule if you would like to suggest one though.