You answered your own question. They are called Wargs. They are, in other words, the wild wolves of the mountains.
wargs
Wargs. They are slightly larger and can speak.
wargs
They dwarves and the hobbit hear the Wargs howling.
The wargs were unable to get them out. However, the goblins were able to redirect the fire and were in the process of burning them out.
Orcs and Wargs. It doesn't say the Wargs kill themselves but they do eat the orcs.
It was the Battle of Five Armies. The armies were the humans, elves and dwarves against the wargs and the goblins.
He was investigating the gathering of orcs and wargs and happened to see them.
In "The Hobbit or There and Back Again", the party is traveling through the forest when they hear wolves. They scurry up the surrounding trees and the Wargs rush in. This happens to be their "Meeting Place" with the goblins. The party is trapped in the trees with furious Wargs and Goblins beneath them.
A warg as refered to in The Hobbit is a particularly evil type of wolf. Wargs and goblins often help each other with wicked deeds.Wargs, especially those of the Hobbit, were known to speak in their own language, and so they were sentient beasts, like the crow Roac and the Thrush. There is not too much description about the Wargs in Tolkien's works besides the fact that they were like wolves (often called by that name as well). However, it is interesting to note that a spell Gandalf one time uses in LOTR, when translated, calls the attacking Wargs "ngaurhoth" (werewolves). Thus, it is possible that the Wargs of The Hobbit and The Lord of the Rings were the werewolves referred to in Tolkien's Silmarillion.
Bilbo and the dwarves are caught first by trolls, then by goblins. they are trapped up in a tree because of goblins and Wargs
Tolkien describes the wargs in "The Hobbit" as large, fierce, evil wolves that are in league with goblins and are under the control of the goblin leader, the Great Goblin. They are depicted as being cunning, cruel, and capable of communication with one another.