Is this bizarre creature really an alien baby (video below) or just part of an elaborate hoax - and was it the cause of a mysterious revenge death?
Mexican TV revealed the almost unbelievable story - in 2007, a baby 'alien' was found alive by a farmer in Mexico.
He drowned it in a ditch out of fear, and now two years later scientists have finally been able to announce the results of their tests on this sinister-looking carcass.
At the end of last year the farmer, Marao Lopez, handed the corpse over to university scientists who carried out DNA tests and scans.
He claimed that it took him three attempts to drown the creature and he had to hold it underwater for hours.
Tests revealed a creature that is unknown to scientists - its skeleton has characteristics of a lizard, its teeth do not have any roots like humans and it can stay underwater for a long time.
But it also has some similar joints to humans.
Its brain was huge, particularly the rear section, leading scientists to the conclusion that the odd creature was very intelligent.
But it has seemingly left experts stumped.
And in a further mystery, Lopez has since mysteriously died.
According to American UFO expert Joshua P. Warren, the farmer burned to death in a parked car at the side of a road.
The flames apparently had a far higher temperature than in a normal fire!
Now there are rumours that the parents of the creature Lopez drowned were the ones who in turn killed him out of revenge.
There are frequent UFO sightings and reports of crop circles in the area where the creature was found. Perhaps it was left behind deliberately by aliens.
Mexican UFO expert Jaime Maussan was the first to break the story. He claimed it was not a hoax. Farmers also told him that there was a second creature but it ran away when they approached.