The First Grade Rex Rabbit Skins have the softest, silkiest and densest fur of our rabbit skins line. These top of the line rabbit skins are soft-tanned, big, and very heavily furred. The feel of these luxurious pelts are these closest you can get to a sheared beaver skin - but at a fraction of the cost! The Rex rabbit hair is about 0.75" long.Castor rabbit skins refer to rabbits that are beaver brown in color and have not been dyed or bleached.