Most likely if you hug a wolf then it will attack you because it feels trapped or it may think you are trying to hurt it, even if it's "tamed". They're aggressive animals and they don't have the same social behavior as us. Wolves are wild animals, so they didn't get domesticated by us for thousands of years and got used to any of our social cues over time. This is why cats usually only meow at people and most dogs bark a lot. Thousands of years of domestic breeding caused them to learn our most useful social cue, verbal communication. The wolves today do not know our social cues because their individual ancestors were not domesticated unlike the dog's ancestor. Really, it takes a while for a dog or cat to actually learn what a hug is, and sometimes they will never learn at all. Overall, a hug to another animal may seem like a way to get attacked or trapped by a stronger, strange, more mentally developed animal who stands way taller than them (humans).