Strange footage shows a 'possessed man transform into animal'

Footage, claiming to show a man being possessed by demon, has emerged online. In the video, a man is seen writhing around on the floor with a mental look in his eye. See video after the cut
The man is seen pulling his clothes and undressing as a man with a microphone yell instructions at him in Spanish.

The man is later seen acting like a snake, moving around the floor as one with an unbelievable likeness.
It is not known where this particular event took place.