I'm guessing your neighbor doesn't like dogs and is kind of a whiner, and thus has exaggerated the situation. Likely the dog is unaccustomed to the new environment and is barking randomly at new noises, new sights, new smells, etc. The dog barks once or twice every 15-30 minutes, but because the neighbor is sensitive to the noise, once or twice in half an hour seems like a bigger deal than it is, kind of like how annoying Lambskins jokes are, so even though he only posts once in a while it seems like he's constantly annoying everyone because it's so offensive.
However, that doesn't stop this situation from being potentially serious. If you can keep the Cam thing going on for a while, and somehow record it and offer to provide it to the HOA chick, maybe she'll start taking your word for it and start realizing that the neighbor is overreacting.
Keep wreves in General Talk in 2011!