Chicago cracks down on dangerous dogs… actually, on their owners: ‘Chicago dog owners who allow their pets to run wild will face $300 fines and up to six months in jail, and $10,000 penalties if the dog goes on the attack.

Owners of dogs subsequently declared ”dangerous” will also be required to have their dogs spayed or neutered, have an identifying microchip injected under the animal’s skin and obtain $100,000 in liability insurance within 10 days of the designation.’ Chicago Sun-Times