dog runner
n.— «“Dog running went from unheard of to über-hip,” said William Sharp, a part-time dog walker in San Francisco. “People like telling their friends, ‘I have to leave a key for Fifi’s dog runner.’ It’s far more sexy than ‘dog walker,’ which is so yesterday.” His business is down because, he said, “The runners are literally leaving me in the dust.”» —“They Take the Bounce Out of Bowser” by David Sheff New York Times June 21, 2007. (source: Double-Tongued Dictionary)