LgD - the dog I was walking comes from a family of 6 children, two of whom are under 5. All I was trying to point out was that the best natured dog, used to toddler excess, can revert to instinct when surprised. That is, I concede, an argument to keep a dog on a lead at all times. However, the corollary is that parents also have a duty to supervise their children. It could have easily been another child that they ran up to and threw stones at. The father of the children was so busy having a chinwag, he didn't even see the incident.