Anyone who has small children and a pit bull has a ticking time bomb. As Rat pointed out, any dog breed has the ability to show aggression, Pits are bred to and are capable of killing...hence their name. Some breeds also have more of a propensity to snap. When I was a kid, we raised Louisiana Catahoulas. I will never own one. They can be great dogs and also some of the best deer blood trailing dogs you can find, but there was definitely a crazy streak in them. One of our males nearly killed my Uncles Chow, but in that case the Chow kinda got what he had coming.