The good thing about getting in touch with Animal Control is that the complaints are usually anonymous. The just let them know that there was a complaint and that they are violating town bylaws. Prevents unpleasantness and retaliation if that's a concern.

We have TONS of dogs in our neighborhood (including my two) and they all bark occasionally. Only one guy ever lets his dogs bark for longer than a few minutes (sometimes up to an hour), it doesn't bother me so much as I can hardly hear them but my dogs will get agitated if they're going crazy outside so I have to bring them right back in. It can be frustrating for sure. They've been a bit better lately and I think one of my neighbors might have escalated the situation to the town.