Section 25 of the State Hunting Law in Northern Rhine-Westphalia (NRW) provides (g, my translation)
(4) Those who are entitled to protect hunting conditions (Jagdschutz) are permitted:
1. To detain persons who enter a hunt area without permission or who commit another violation of hunt regulations or who are found equipped for hunting outside the general approved hunting paths, to gather personal information from these persons and to seize from them killed animals, firearms and other weapons, traps, dogs, and ferrets.
2. To shoot and kill dogs and cats which are becoming feral. A feral dog is defined as a dog which hunts, follows, or seizes wild animals outside the control of its master (orig. Führer!). A feral cat is defined as a cat found in hunt area more than 200 meters from the nearest house....
According to the German nature group NABU, German hunters in NRW alone kill around 8,000 cats a year (g) under this law. The Green Party in NRW is trying to eliminate this law (g), but the hunters are fighting back, claiming that culling cats protects songbirds and other species. The controversy rages!