With 2019’s The Art of Racing in the Rain, a live-action remake of Disney’s classic Lady and the Tramp and this year’s Call of the Wild, Scoob! and Clifford the Big Red Dog, it may seem like canines — real and animated — are taking theaters by storm. But dogs have been darlings of the screen since film’s beginnings, says Robin Ganzert, author of Animal Stars and president and CEO of American Humane, the nonprofit that monitors on-set animal safety to provide the “No Animals Were Harmed” certification.