We're not talking about wild animals here. We're talking about farm animals, which are intended to produce or work. If your dog is killing your chickens, he's

We're not talking about wild animals here. We're talking about farm animals, which are intended to produce or work. If your dog is killing your chickens, he's impacting your production. If a goat is too old to reproduce, they're just costing money to feed and care. Margins are thin on a farm and there's little room for such liabilities. Thus it has been for thousands of years in agriculture.