A doghouse isn't merely a luxury in the unpredictable climes of central Maine. It's practically a necessity. So when Jasper finishes patrolling his mountain terrain, he retires to the rugged A-frame built for him by graphic artist Scott Stowe. Jasper's shelter has a pressure-treated foundation, stained red to match the one on the main house, and 3 inches of fiberglass insulation packed into the walls, floor, and ceiling. The roof shingles and clapboards are the same as on Stowe's house, and he even put stone-look linoleum on Jasper's floor to match his own stone entryway. "I've never done construction of any kind before," says first-time homeowner Stowe. We applaud his debut.