In 2017, Emily Olson, a stay-at-home mom who lives in Boulder, Colorado, started selling custom puppy prints and portraits on Etsy. His watercolors were simple and relatively inexpensive (images of saucer-eyed corgis and malamutes in mini-tuxedos, which sold for between $75 and $300 each), but dog owners loved them: “They were a labor of love,”