Even though both my dogs are good natured around children and have been exposed to them with the neighborhood children coming over to play with them, I am always very vigilent. Some (and I do mean some, not all) little kids don't have a clue how to approach or interact with a dog. Handling by an unknown person that is lightening quick or rough may put any dog in a fear situation. And fear can mean a bite. Some little kids also don't know how to read a dog's signals. The dog may be signaling, leave me alone, I don't like that, and the kids don't get it. My dogs have never biten anyone, but I still am put on an alert to supervise interactions with strangers and am not hesitant to "teach" in the process.