No they are not real.
No, it is not currently possible to undergo plastic surgery to replace human ears with real working wolf ears or have a tail that functions like a real wolf's tail. Plastic surgery can alter the appearance of ears and create cosmetic enhancements, but it cannot fundamentally change their structure or function to that extent. Additionally, the anatomy and mechanics of wolf ears and tails are vastly different from human ears and tails, making it impossible to replicate them through surgical means.
You can't if you're a human, but you can if you're a werewolf, of course!
The manga you are referring to is likely "Kamisama Kiss" (Kamisama Hajimemashita) by Julietta Suzuki. The main character, Nanami Momozono, gains fox ears and a tail after becoming a land god.
Wolf by the Ears was created in 1991.
a wolf talks not only with its mouth but with its whole body too. movements of the tail,ears,nose,paws, and entire body is how a wolf expresses its feelings along with barks,grunts,snarls,and whines
For the wolf to hear.
Holding a Wolf by the Ears was created in 2006-11.
Werewolves have ears that are very similar to normal wolf ears. The biggest difference is that werewolf ears are typically just a couple sizes larger then normal wolf ears. The placing of the ears on the head are the same as a normal wolf.
Aside from the fact that this operation is not yet medically feasible one would think that any board certified plastic surgeon would balk at such a request. So, no.
A real wolf can't talk, and cannot swallow people whole.
If a wolves tail is straight up, or curled over it's back, it is the leader and you shouldn't mess with it. If the wolves ears go back, it snarls, and at the same time, it's tail is partially under it's legs, it means it is frightened, but not enough that it wont attack. If a wolf is smiling, then well... it's a happy wolf If a wolf's tail is slightly raised, it means it is friendly, but it is not alpha. If a wolf walks stiff legged, shoulder hunched, tail striagt down it means either it means buisness or it's in a fowl mood.
Wolf by the Ears by Ann Rinaldi is a young adult historical fiction novel.