Collie are also bred to be herding dogs, yes. And there are many examples of dogs such as this who prevent children from wandering into traffic, or other such feats. And people are constantly amazed at this? This is what the dogs do, what they are bred for. I grew up with a collie, great dogs.
Karl, a Bouvier Des Flandres, is also a herding, guard, protector, hunting, search, rescue able dog. Though I don't know this particular dog, these dogs will also attach themselves to one or two in the family and protect with their lives. And will instinctively protect children, often to the surprise of others. Wonderful friends.
But sorry to digress, this is a site for woodworkers.