What are the things a dog owner should say or show in the event of a visit by animal control? Who should a dog owner contact for up to legal advice and representation? What are the tricks and schemes that animal control will use to scare an unprepared dog owner?
Like most people have said, I think as long as you are actually caring for your animals, there is nothing animal control can do. As with any LEO encounter, be polite, civil, and answer only direct questions with as little information as possible. If at any point you feel you're being cornered call your lawyer for advice.
If your following the law there is nothing to worry about 99% of the time.
As for 'busy bodies' the legislature needs to pass harsher 'harassment' laws so that people who are unduly harassed by people calling animal control can pursue criminal action.
It is a fine line though. There are those people out there who are 'abusing' their animals and they need to have them taken away.