We here at DCist know how much you love to squee at cute animals during your workday. But not every bit of National Zoo news can involve a newborn baby, a panda or, lest your head will explode, a newborn baby panda cub. Absent since 2009, three 5½-year-old cheetah brothers — named Draco, Granger and Zabini — have returned to the Smithsonian’s National Zoo in time for Thanksgiving weekend. The three had been living at the Smithsonian Conservation Biology Institute’s Cheetah Science Facility in Front Royal for a cooperative breeding and conservation program and will join Tumai, a 10-year-old female cheetah already on exhibit. We first welcomed this coalition of brothers back in 2007.