The alleged footage of the Martian food chain in action was filmed by the NASA Curiosity rover droid as it drilled into the surface to take samples.
A clip has been made from the footage by YouTube channel Mars Alive, which seeks out evidence of life in NASA pictures and videos, alleging that it shows the small alien predator feating on an even smaller creature.
The video, entitled "NASA What Has Curiosity Rover Detected Here? Explain!!" has attracted thousands of views.
Have to admit that it's pretty intriguing. ;-) To read more and view the video, click here.