Previously I make all my animals has their owner except the cats. Now when I'm thinking of keeping only goat, sheep,dogs and kill others. I realize I can't cancel ownership.
After searching on Google, I found some ways:
1.Kill the pet with magma or trap etc... ,but will make dwarf unhappy
2.Kill the dwarf, but almost EVERY dwarf has pet, means I need to kill every dwarf.
So, is there anyway to turn the pet back to "no owner" condition? Like mod, dwarf therapist, DFhack, or change through the raw files ?