Wargs

By the time of Bilbo’s adventures, Wolves, Wargs and Werewolves could be encountered at night in the eastern vales close to the Misty Mountains, where they prowled in search of prey. The Wargs and Orcs of the Mountains often help one another in raids against the Woodmen, gathering food for the Wolves and slaves to work for the Orcs.
Wargs are a particularly evil breed of Wolves living over the Edge of the Wild, displaying wicked cunning and malicious intent. They communicate using a dreadful language, foul to the ears of listeners not sharing their love for cruel and hateful deeds. Wargs generally look like lean and powerfully-built grey wolves, with eyes shining in the dark, but their size and appearance vary according to age and experience.