The Ballet of the Dog Walkers

Have you ever watched a person walk more than one dog at a time, or two people walking two dogs? There is an intricate dance going on between the people, the dogs, and the leashes. There is a weaving, ducking, stepping over that happens all in a smooth fashion in an effort to keep the leashes from becoming tangled or the dogs from running away onto the grass of the park.

It's something I've often thought about, but never known how to explain it.