You have to be very careful with kids though... they dont always understand that a dog can turn in an instant... ANY dog.
Had a Border Collie when my boy was small, then one day while my back was turned he put one finger up its nose.. dog turned and bit him on the face taking a chunk of skin out beside his eye... my son is scarred for life after this on the left eye.
It happened in a fraction of a second and was all over before i could even turn a round... thats a Border Collie.. would hate to see a Staffy turn