Where the hell do you get this nonsense? Wolves are in the business of killing dogs and other wolves. Boxers are pets. Wolves kill animals as big as moose just for dinner, not for territory or some other reason that would motivate them a lot more. I live with wolves and they have zero hesitation killing a dog. For the last 4 years I have been very circumspect about checking the area I hunt birds in for indications wolves are present before I put my dog down to hunt. Wolves will risk a confrontation with humans to kill a dog. They will turn on pack of hounds when they feel like it.
There are no dogs that are wolf proof or capable of dealing with a wolf intent on killing it. If there were, people in wolf country would be using them instead of losing stock to wolves. They might work deterring wolves in Florida, but they just turn into wolf [bleep] up here.
I was specific in referring only to the gripping type of dog, i.e., with an ancestry in bull baiting, boar gripping, or pit fighting. The vast majority of dogs probably wouldn't get an effective bite in on a large wolf if attacked by one.
I've personally seen Boxers in fights. They're amazingly determined to hold their grip and not give up, regardless of taking punishment. They are second only to fighting specialists in this regard. Wolves, on the other hand, obey the ordinary laws of animal behavior like any other wild animal, and will seek to avoid and/or minimize injury. Gripping dogs have been intentionally bred to disregard this instinct, and will take extreme injury while maintaining a grip. This makes them a special case among dogs. Thus, as I said, were a Boxer-sized dog in good condition, belonging to a gripping breed, able to acquire a hold, a wolf would likely rethink his choice of meals.
Could be, however, that dog-hunting wolves are extremely adept at gaining the advantage from the start, thus preventing such a dog from acquiring a grip. That's a different question, and one to which I cannot authoritatively speak.
