[Eomer of the Rohirrim]

Was Tom Bombadil a Warg? Sounds like a fantastic debate and one which I am looking forward to.

Concerning the Wargs of Rohan. They moved into Rohan during a harsh period for the Men of Rohan. Their numbers were dwindling and they were constantly threatened by nearby Orcs. No-one knew where the Wargs came from. All they knew was that they acted friendly towards the Men and protected them from many evils. The Elves of Mirkwood did not know about this relationship because communication between Mirkwood and Rohan was tricky in those days.

I do wonder if Wargs can be considered Bombadil-esque. If we consider it, we can see that the origins of Men and Elves and Dwarves and Ents are given explanation. Even Hobbits are explained better than Wargs are, being linked closely to Men. To not explain the origins of Wargs (especially considering how potent their powers are) was a strange ommision by the Good Professor.

Without putting much thought into, my initial guess would be that Wargs are simply servants (?) of the Valar. Feel free to challenge this claim.