|Pitbull isn't a breed, it's a general term for a variety of dog breed. The only true "pitbull" is the American pitbull terrier (apbt). Ofcourse, the old English dogmen can debate on that, but that's another question altogether.
And no, a "pitbull" do not have a lock jaw. It does not betray it's owner, or go insane. Throw all that bullsh*t out the window. A pitbull is probably the most loyal breed on the planet. Why? Unfortunately, they are loyal because they were bred for fighting (after bull baiting was made illegal in Britain, people turned to dog fighting). In a fighting pit (cajun rule), the dog is handled and washed by a stranger (owner of the other dog). If that dog ever bite a person, it will most likely be culled. During an intense fight, the referee has to separate and scratch them. You try separating any other breed, including your friendly Golden retriever during a scuffle, and you will most likely be bitten. A pit fight isn't a scuffle, it's an all out battle, yet both pitbulls can be handle by a stranger (referee). For most other breed, after years of abuse and neglect, they become fearful and bites. A pitbull is the most abused type of dog, yet if you watch animal planet, most of these pit, even fighting ones are regularly handled by aspca agents without fear. Like any other breed, there's always one or two exception.
Do not confuse "animal agression" with "people agression". That's where many novice pitbull owner runs into trouble. They see their pitbull as the most friendly of dogs toward humans, so they think, why not friendly toward other dogs? they let they dog roam, and the pit ended up killing another DOG. "Never trust your pitbull not to fight" another dog. Regardless of how friendly it is.
A bad trait of pitbull is breeding them with big, man-agressive, guarding breed. A pure pit is the friendliest dog toward people of any other breed. Period. However, many backyard street thugs like a bigger dog, and bred them with rottweiler and other instinctive gaurd dog. A result, you have a human agressive mutt, that looks like an Apbt, but is not one at all. People are also confuse as to which one is the true pitbull. Take this test:
In the dark side of dog fighting, dogmen do not care what their dog looks like. If that dog has game and looks like a skinny greyhound with floppy ear, it's a true pit, regardless.
Like any other breed, socialize your pitbull(pet-pitbull) with people and other dogs at an early age. Most do not show agressive tendency towards other dog as a puppy. However, around a year depending on temperament, I suggest humans be your pits primary companion, not other dogs, even ones they use to like as a puppy. Pits love people, and a true pitbull is the most people friendly dog of them all. That's why you hear many game pitbulls stolen from a breeder's yard. Try to steal a rottweiler or german shepard, and you'll get more than you can chew.
Last, but not least, let's get into theory. Can a "game-pitbull" take on a "wolverine"? The answer is a definite yes. Can the game-pit die from this "fictional" fight? yes. Will it give up? NO. If the wolverine can not kill the game pit, it will most certainly die. A game pit is highly pain tolerant. It can dish and receive punishment. A wolverine is all about survival. If it encounter a bigger more dominant wolverine, it will back down. If it encounter a more dominant "pesonality wise" pitbull, will it back down? probably yes. Will the pitbull allow it to back down? probably no, the game pit will continue to fight it until the wolverine dies, or itself dies. It is unfortunate what man has bred into this breed, but it's reality.
While you (and I) should not condone any form of animal sport fighting, do not ignore the facts of how your breed has come into existence. Sure, it's probably the friendliest, most beloved breed you have ever own, but also be aware of your dog's instinctive tendancy. "Never trust your pitbull not to fight another dog". Always have your dog on leash outside the house! Absolutely, do not bring it to a dog park! It's not natural, because in a dog-park setting, strange dogs are running all over the place without order, or knowing who's domanant or not. Dogs are marking it's territory all over the place, and fights will Most likely happen. If you love your petbull, do not give it the opportunity to fight another dog. Regardless of which dog starts the fight, the blame will be on your pit. If you want to continue owning your dog, then do not allow the media to portray it in a negative way by being ignorant of the facts.