A minor annoyance

Lately I've noticed something in my neighborhood. I live about two blocks away from a fairly busy fire station, so it is not unusual to hear the sirens fairly regularly (at least once a night). What has changed is that one of my neighbors' dogs has taken a liking in howling whenever a siren is audible. This prompts ALL of the other neighborhood dogs (and there are many) to bark and howl in response. This will go on for 30 or so minutes.

It is slightly annoying but I would never mention it to any of the dog owners, because a) that's just what dogs do, and b) when I had dogs we got tons of complaints about their barking and it pissed me off. I don't think it is worth getting worked up over. I find it interesting in a way.