I don't see wolf at all. I think lab, mixed with something else medium-large size, short coated with prick ears. Because of such a short coat I don't think German Shepherd (despite the ears), also I don't quite think the ears/face/eyes say shepherd. In the one picture looks like he could have shepherd but in the others I don't see it at all. If he had longer hair you might think husky or collie mix because of the pattern/mask on his head and eyes, though lots of other breeds can have that too. You don't happen to have any dingos around you do you?
They're red, short coated and prick-eared! Corgis and cattle dogs both have large prick ears and come in the red colouring, though I think he's too large to have corgi in him and cattle dogs also have more hair. I doubt there's any hound in him at all with his ears, lab ears are heavy enough, mix lab with hound and I don't think he could possibly have such erect ears as he does. Sometimes it's a real guessing game trying to figure out what breeds may be in a rescue. I have a couple like that. One obviously has some cattle dog in him, the other who knows. Something like GSD mixed with a breed that comes in merle colour.