Board Thread:Suggestions forum/@comment-33185350-20171123170105/@comment-32865299-20171129201438

Through many generations, the descendants of Beorn were like him skin-changers, able to take the shape of a bear.[note 1 ] Some of Beorn's descendants were grim like him and even "bad", but none of them matched Beorn in size and strength.[2 ] - Tolkien Gateway, Beornings.

I believe this does in fact prove you wrong on both things.