studioADI takes us back to 1991 with this awesome behind-the-scenes videos from their workshop in UK’s Pinewood Studios.

The never-before-seen footage shows an effects team member dressing a whippet into the “Runner” Xenomorph used in David Fincher‘s problematic Alien3.

The Runner, also known as the Dog Alien or Ox Alien, is an adult form of the species Xenomorph XX121 spawned from a quadrupedal host animal (such as a dog).

The costume doesn’t look very comfortable; I can only hope they gave the dog a whole lot of treats!