I had a dog who I had rescued. We had the dog, Barney, before we had our children. He had been abused, and he was prone to growling if he felt threatened. My son was a very agressive toddler, so Barney growled at him quite often. We taught my son to be more respectful of Barney's need for space. We took Barney to dog trainer/therapist, and we worked with him. I'm sure plenty of people would've never tolerated Barney's behavior. But you know what? When we take in pets, it's for better and for worse. We take the committment very seriously. Dogs aren't disposable, and too many people think they are. It's a rare case in which a dog legitimately has to be put down for aggression. As my son grew, he learned to be more gentle, and Barney felt less threatened by him. They ended up buddies. I would be inclined to think the dog feels in some way threatened or alarmed by your son. I think you've gotten good advice (from the people who recommended a trainer/behaviorist and the people who gave you tips for working with the dog and your son). And, by the way, I agree with Rajah and Piphay - pets are part of the family - you don't kill them just because they become difficult to deal with.

