Yeah, doo doo happens. I got cited last year speeding in a school zone. Mind you I go through 4 school zones on my regular route to work and always obey the 20 or 25 MPH limit within them. This particular day I was going to a meeting and had no idea I was in a school zone. It's a crazy way the Y intersection was laid out and where the school zone sign was.
Anyway, I was speeding and I was caught. Hadn't had a ticket in almost 20 years, so I went to court plead no contest and paid court cost and 6 months probation. It's supposed to be off my record now.
Good luck with yours. Could be worse, he could have shot your dog and arrested you for assault on an officer.