Board Thread:False Info and Speculative Discussion/@comment-27411820-20160129022510/@comment-544940-20160129023503

They are "abominations" not natural even by supernatural states and they contain claws, tails etc from existing mythical creatures established in the canon. If the Shireff's departmant ever obtained such a thing, they could send it off to be studied and that could all lead to the exposure of the supernatural world.