First, Mars was thought to be invaded by jelly doughnuts. Now, some are claiming the latest photos from NASA's Curiosity rover show proof of human or animal life on the Red Planet. UFO Blogger first discovered what it calls a "fossilized thigh bone" in a photo snapped by the rover's MastCam on Aug. 14, and truly, the object looks like one. So what does NASA have to say of the find? So far, nothing. This is just the latest of many, um, interesting finds on Mars, including what some claim as an iguana, cat, two dinosaurs, a toy boat, and a mysterious light, the Houston Chronicle reports.