I'm an odd case. I'm left-hand dominant, left-eye dominant, and left-foot dominant. Extremely so in all cases. However, whenever I get tested to see which hemisphere of my brain is dominant, I come out with them being equal.
Also, most babies are ambidextrous. My parents noticed my left-handedness early on and attempted to see if I was like other babies. I would cry whenever they wouldn't let me use my left hand. Under no circumstances would I use my right hand for anything until I started school and was forced too.