'Mars Rat' Takes Internet by Storm - Mars Curiosity Rover

A Mars rock that bears a passing resemblance to a rodent is scuttling across the Internet with gusto, even inspiring some fans to set up a Twitter account in its name.

UFO buffs spotted the purported "Mars rat" in a panoramic photo snapped in September 2012 by NASA's Curiosity rover. Zooming in on a portion of the image reveals what appears to be a rodent crouching between two rocks, its nose to the ground.

"It's a cute rodent on Mars. Note its lighter-color upper and lower eyelids, its nose and cheek areas, its ear, its front leg and stomach," Scott Waring wrote at UFO Sightings Daily back in December. "Looks similar to a squirrel camouflaged in the stones and sand by its colors."