That is why I will never trust a pit bull and think they should all be put down... their absolute unpredictability. Nice nice nice and then BOOM. An attack. More than any other dog breed to.
Cesar Millan, the dog whisperer, doesn't think that dogs have significant, innate personality differences. He doesn't believe that there are "bad" dogs, or "bad" breeds, he thinks dogs respond with the reflexes that have been conditioned into them.
Part of the reason that pit bulls have a bad reputation is how they are treated. Some people use them as fighting dogs, yes, but more than that, people are fundamentally scared of them. That becomes a self-fulfilling prophecy, the dog can sense the emotional energy and interpret that as reason to lack confidence in the owners leadership.
Ever see the person walking their dog, the dog is pulling the leash, the person is basically being dragged ?
Dog is going crazy ? This is a dog that thinks it needs to be the leader. If a pit bull gets excited, as dogs ordinarily get stimulated by seeing one another, the owner might tug on the leash. If the owner yanks on the base of the dogs neck with the leash, the dog can interpret that as aggression, and it can infer the owner's emotional response as weakness, as reason to lose confidence in leadership.
On the other hand, i bet this guy doesn't even need a leash to walk his dog :
Cesar says that the happiest dogs in this country are homeless people's dogs. Treating a dog like a "bad" dog that needs to be physically restrained is not necessarily going to make a happy, well-balanced dog. What an owner needs to do is control the mind of the dog, not the body of the dog. The attempts to control the body can make things worse.
Frankly, i'm not an expert on dogs, so i simply take Cesar at his word that he can rehabilitate almost every dog (i believe he has found two that he cannot fully rehabilitate), and that includes a huge number of pit bulls. Actually, his pit bull, Daddy, is often used to help train aggressive dogs in how to appropriately socialize.
https://www.cesarsway.com/cesar-millan/cesars-blog/why-i-love-pit-bulls
That said, if an owner is unable or unwilling to put the time into their pet, especially with respect to proper
daily exercise, it doesn't matter if it's a pit bull, a german shepherd, or a chihuahua- it's unfair to the pet, and it can make the pet a serious danger to those around it.