The City could not issue citations until October 1st. But beginning on February 27th, as soon as the Mayor signed the Ordinance, it was enforced at the six Animal Shelters. You were told that you had to have your animal sterilized. If you were familiar with the law, you could get them to grudgingly agree that if you had an AKC show dog, you could get a $100 license. But each person wanted different "proof" of this. For some an AKC Certificate was necessary, for others a listing in a dog show catalog, others wanted to see that your dog was really there.
Unless you showed your copy of the ordinance, they never mentioned that you could keep a non-AKC dog intact by buying a "Breeder's Permit". CDOC accompanied several people to license their dogs after they were told they could not get intact dog licenses. So this law has been enforced since February. We have video and recordings of shelter personnel and their supervisors fumbling their way through explanations; not their fault; it is amazingly complex.
We also have a sworn statement from Ed Boks talking about the fact that the law was enforced, as far as licensing, beginning February 27th.