Remember this the next time you're playing fetch with your furry friend. My pugalier Rocky has always had a gift. His ability to sniff out a tennis ball anywhere is remarkable. At the park in thick grass, under the couch, buried in someone’s garden. For years, I joked that I wished I could teach him to find gold or truffles or anything more valuable. Once he found one, he’d demand a long game of fetch before chewing it for hours. It seemed like exactly what a happy dog was supposed to do. When