So what happened to un-domesticate them?
A question dangerous to ask, but easy to answer...as this cautionary tale does so, uhh--eloquntly:
Overview: The heirs of Lotus Cat Food resume their uncles' business of making their product out of human corpses while a group of vaguely cat-like aliens coincidentally come to Earth looking for food. Nothing ensues
Where do you think the widespread jaguar god archetype came from?
They probably got bored and wandered off.