PUBLISHED: 01:04 EST, 29 May 2013 | UPDATED: 04:58 EST, 29 May 2013
A science blogger with a keen sense of vision claims to have spotted a lizard meandering around Mars.
The unknown spotter is from Japan and alerted the website, UFO Sightings Daily, of the unusual sight.
The rather unbelievable and completely unsubstantiated claim has caused some excitable conspiracy theorists to fear that the NASA could be planting life on the planet for scientific testing.
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Unusual: A science blogger with a keen sense of vision claims to have spotted a lizard meandering around Mars
Unidentified object: The unknown spotter is from Japan and alerted the website, UFO Sightings Daily, of the unusual sight
Blogger claims to have spotted LIZARD on Mars
Sight: In the original image posted on the NASA website, the alleged creature, back left, doesn't appear as clearly with legs and a tail, some have noted
The creature, judged to be either a rat or lizard, appeared in photos that were released by the American space agency in March.
The photos were captured by a camera on NASA's Curiosity Rover.
'This odd creature was discovered on Mars by a person in Japan in March,' a posting by Scott C. Waring, who runs the UFO website, read.
'With water existing on Mars in small amounts, its possible to find such desert animals wandering around...although very rare mind you.'
Space watchers: Scott C. Waring runs the UFO Sightings Daily website that featured the photo of the alleged space creature
'Then again, is NASA placing animals from tiny cyogenic chambers inside the rover onto the surface of Mars to conduct tests?' the posting continued.
Waring invited readers to post comments voicing their opinion on the theory.
The San Francisco Chronicle commented that in the original NASA photo, the object appeared just as a rock while the photo appeared on Waring's website appearing with legs and a tail.
Curiosity landed on Mars on August 6, 2012, and has spent its time investigating and analyzing the landscape and geology of the red planet.
The $2.5 billion rover was sent to the planet to assess if the planet most like Earth has or ever had the chemical ingredients and environments for microbial life.