The decision aims to help save the “crowned lark” birds, which lay their nests on the ground and thus become easy prey for cats.
The controversial decision comes in Germany, as bird numbers in Western Europe have fallen sharply in recent decades.
The ruling applies to all South City cats and remains in effect for the next three years, but it has raised concerns among pet owners.
The Rhein Neckar Zeitung daily reported on Wednesday that the head of the local animal protection association planned to take legal action to appeal the decision.
“Please stay calm, I can assure you that we will do everything in our power to stop this inappropriate action,” he said.