The scientist watches through the glass of his observation room as his newest creation is prodded into the large, bare-walled concrete chamber beyond. The creature is hideously misshapen, for it's still in transition from what it was to what it is to be. But that was why it was here; to be given fuel for its continued evolution.
The bestial form crawls on unstable legs towards the goat tied to the central column. The terrified animal bleats hysterically as the creature closes in. The beast suddenly hesitates in its stride and backs away, turning its hairy, horned head in refusal despite its terrible hunger. It is promptly punished by a shock from the heavy collar about its neck.
"Eat, my child," the scientist urges in a soothing tone, "Do not deny your predatory instincts."
Whether or not it truly understands, the beast still refuses. But after the next shock, something in its mind finally gives way. It surrenders to its primal appetite and rushes its intended meal. With a sickening snap, the goat's cries abruptly cease.