In British canine agility classes, there are often two sections: Border Collies and Anything but a Border Collie. The often black-and-white Border Collies, made famous in the movie Babe, are considered among the smartest and most agile dogs in the world and are in a class by themselves. I picked up Mr. and Mrs. Dog, by Donald McCaig, hoping for a little more understanding of our Border Collie, Tess, a pull from the local pound. Despite her hard upbringing, she is joyous and full of energy, leaping about like a lamb when it’s time for a walk. But she gets down to business, too, gently making sure that everyone is in place and taken care of. Very responsive to commands, gestures, or just a hint of what’s wanted, she wants to do what’s required of her, almost obsessively. I did wonder, is this normal?