Quoted from cesarmillaninc.com
I deal with a lot of red zone cases, and I often hear people INCORRECTLY blaming the breed. Any breed can cause trouble. The difference between an aggressive Chihuahua and an aggressive pit bull is that the bigger breeds can cause proportionately bigger damage. It is important to recognize the power of a strong breed, like the pit bull, the Cane Corso, and the Mastiff. These dogs are very powerful and, if they are unbalanced, they can cause serious injury.
Remember, these dogs don’t dream of being in the news when they grow up. Dogs don’t premeditate bad acts like people do. Bad things happen when powerful breeds (or mixes of powerful breeds) live with humans who like the breed but don’t understand and fulfill the animal in the dog. Many people consider the look or popularity of a breed before thinking about whether the dog works for their lifestyle. This is a recipe for disaster.
To control a powerful breed, you need to become the dog’s pack leader and establish rules, boundaries, and limitations. You need to fulfill the dog as Nature intended him to be fulfilled. If you are considering adopting a powerful breed, make sure you are willing and able to take on the responsibility.
(I bolded Incorrectly so you would see it)