If you ever have several hours to waste and don't mind peering into one of darker recesses of the internet (or at least out of control pareidolia) head on over to YouTube, type in Mars anomalies (or for that matter, Moon anomalies) and in the immortal words of Bette Davis, "Fasten your seat belts. It's going to be a bumpy night."
Okay, I will admit that I love a good conspiracy theory as much as the next guy*, and I fully believe that NASA and our government are withholding knowledge of a whole lot of what is actually "out there" with good (or at least misguided) intentions, but on the other hand, I don't see birds, animals, insects, tiny little people, toppled statues of kings, masks, and carefully fashioned blocks of stone in every damn photo sent back from our various Mars rovers.
I would admit that yes—conservatively—5 to 10 percent of what these kids-living-in-their-mom's-basements are finding is unexplainable, and many of the things they're seeing are just on the edge of camera resolution and can therefore be interpreted as pretty much anything, but that five to ten percent of those images are undeniably fascinating.
In addition, there are many, many images where quite unmistakable (and poorly executed, I might add) image manipulation has occurred with the original NASA files. Obvious blurring is one thing—and can be attributed to data loss during transmission back to Earth—but when sloppy cut-and-paste duplication has occurred (a series of three identical rock outcroppings in one image come to mind) you have to ask why?
*I do, however, fully believe we went to the Moon and consider myself lucky that as a child I was witness to that incredible bit of history being made.