I don't hold much stock in Christopher Tolkien's Histories of Middle-Earth. If I were a published writer, I wouldn't want people rifling through my old notes after I bit the dust to see what I *might* have written while I was still sketching out my roughest ideas. What's more important is what J.R.R. eventually *did* write.may I direct your attention to HoME - Morgoth's Ring:
"This then , as it may appear, was my fathers final view of the question: Orcs were bred from Men, and if 'the conception in mind of the Orcs may go far back into the night of Melkors thought' it was Sauron who,during the ages of Melkor's captivity in Aman, brought into being the black armies that were available to his master when he returned
From the Silmarillion (p. 49, Ballantine ed.):
Pretty clear to me where orcs came from. And what's more clear is that neither Melkor nor Sauron can create life since they do not have access to the Flame Imperishable (p. 4 et al.):For by after-knowledge the wise declare that Melkor, ever watchful, was first aware of the awakening of the Quendi, and sent shadows and evil spirits to spy upon them and waylay them. So it came to pass, some years ere the coming of Oromë, that if any of the Elves strayed far abroad, alone or few together, they would often vanish, and never return...
But of those unhappy ones who were ensnared by Melkor little is known of a certainty. For who of the living has descended into the pits of Utumno, or has explored the darkness of the counsels of Melkor? Yet this is held true by the wise of Eressëa, that all those of the Quendi who came into the hands of Melkor, ere Utumno was broken, were put there in prison, and by slow arts of cruelty were corrupted and enslaved; and thus did Melkor breed the hideous race of Orcs in envy and mockery of the Elves, of whom they were the bitterest foes. For the Orcs had life and multiplied after the manner of the Children of Ilúvatar; and naught that had life of its own, nor the semblance of life, could ever Melkor make since his rebellion in Ainulindalë before the Beginnning: so say the wise.
They can only warp existing life. In the Two Towers (p. 113, Ballantine ed.), Treebeard tells Merry and Pippin:He had gone often alone into the void places seeking the Imperishable Flame; for desire grew hot within him to bring into Being things of his own, and it seemed to him that Ilúvatar took no thought for the Void, and he was impatient of its emptiness. Yet he found not the Fire, for it is with Ilúvatar.
Now you might say that doesn't necessarily mean he bred them *from* Ents, but he had to breed them from something. From what, then? Occam's Razor would suggest Ents, just as Treebeard suggests. Even more likely if you read *how* Morgoth bred the orcs above (from enslaving and corrupting elves). Men and other races haven't nearly the height, and the hobbits practically mistake Treebeard for a troll at first (p. 83: "almost Troll-like, figure, at least fourteen feet high, very sturdy, with a tall head and hardly any neck"). And what did happen to the Entwives anyway, hmm?You do not know, perhaps, how strong we are. Maybe you have heard of Trolls? They are mighty strong. But Trolls are only counterfeits, made by the Enemy in the Great Darkness, in mockery of Ents, as Orcs were of Elves.
As for the fell beasts, that may be more conjectural, but I didn't make it up. I'm pretty sure I read it somewhere ages ago, so it may have some basis in Tolkien's writings. They had to come from somewhere, and Melkor hated Manwë more than any others of the Valar, so it's likely he would've messed with his special creations possibly before anything else. It's also clear he bred the dragons. He kind of buggered off for a century on this latest warping of his: (Sil. p. 137): "Again after a hundred years Glaurung, the first of the Urulóki, the fire-drakes of the North, issued from Angband's gates by night. He was yet young and scarce half-grown..." And after this initial foray, Glaurung gets his butt whipped by the elves and runs back to daddy Morgoth, who spends another two hundred years perfecting his little experiment, or breeding more. But it doesn't say from what stock Morgoth bred the dragon. Since the original ones were more wormlike and had no wings, he probably bred them from something more serpentine than a flying creature, who knows. Again though, he didn't make them from scratch - he couldn't.