What do you mean you haven’t been watching the National Zoo’s Pandacam all day? Well, while you were busy “enjoying your Saturday,” I’ve been intently studying these images (read: hitting Ctrl-R repeatedly), and I can say with certainty that I haven’t the slightest idea whether Mei Xiang is preggers or not. On the other hand, I can confirm Mei Xiang is still a big bear that likes to eat and laze about on that…

Photo by Mehgan Murphy, courtesy National Zoo Officials at the Smithsonian’s National Zoo say they are gearing up for the final 24 hours of watching to see if giant panda Mei Xiang might be pregnant again. Starting at 4 p.m. today, a group of more than 40 volunteers and staff will keep vigil to watch the panda around the clock, with the aide of a series of 38 cameras set up inside the giant…