My neighbors had a pit bull that was docile and nice but I still never trusted it. The reason is that years ago when my husband was on his way to work, he was stopped at a light and a little old man was walking his poodle across the street. A pit bull came running at them from seemingly nowhere and literally grabbed the poodle by the neck, and started shaking it. My husband jumped out of his truck to help and had a stick or a bat or something and was hitting the dog to try to make it let go of the poodle. It's teeth never budged. The poor old man was beside himself. The dog never stopped until the poodle was dead. Very sad story.