i also agree never to leave your kids alone with dogs no matter how good they are with them. Animals can attack if provoked to. But on a lighter note, i have a Staffordshire bull terrier, she is the most gentle natured dog i have ever had, my friends also have one and they say the same thing. I would put one of those into consideration, but never intoduce an adult dog into a housefull of kids if it has never been around children. Buy a puppy and let the kids play with it, so the dog gets used to them, not the other way around. Your kids need to be the boss of the dog not the dog the boss of the kids. If you child wants to pull the dogs ears let it to a certain extent, so the dog knows from an early age that your child is only playing. Good luck.
Aleks, SA, 5yr old girl, 9yr old boy&bubs 10.4.04