Fenrir Vs. LotR
Gandalf—might assume he was a warg and accidentally attack him.
Elves—same as Gandalf. The wargs can't get a break, can they?
Dwarves—same as the others. Yikes. Does anyone even like wargs?
Humans—Fenrir decides not to take chances and appears in his chibi form. Only the Rangers know that he isn't what he appears to be.
Hobbits—would think he was an ordinary puppy and try to take him home.
Ents—you can probably guess what will happen.
Orcs—Fenrir will eat anything, including Orcs!
Balrog—would get heartburn from swallowing it whole.
Saruman—bites Saruman's head off for mistaking him for an overgrown warg
Sauron—you know the drill…
Wargs—they would most likely treat him as the alpha Male of the pack!
Dragons—same result as Balrog—would get indigestion from eating it whole