The creature could be spotted only for a few seconds and published by the Mirror UK.
Filmed in Portugal the odd beast can be seen in this clip for a few seconds before disappearing behind a bush in the centre of the screen.
Some have said it could be a Chupacabra, a legendary Central and South American goat sucker with its first sightings in Puerto Rico.
While others have remarked on the eerie echoes of the footage with that of Big Foot.
The video, which was first uploaded to the internet about a month ago, has been viewed almost 75,000 times with many speculating on the authenticity.
One YouTube user commented: “It has to be an alien .”
While another adds: “Looks faked.