At the behest of my wife, I confronted the dog owners today. We opted for the neighborly approach and made some cookies, which I took over apologizing for not introducing ourselves earlier... Oh, and by the way, did they have any good tips for calming their dogs when they bark incessantly?
She saw right through the cookie-coating. Much to my dismay, she too was pregnant and about as tolerant of me coming over as my pregnant wife was of me not going over. The hormones were raining down on me like acid and I wanted to cry out like the witch at the end of the Wizard of Oz, "I'm melting! I'm melting!" But I didn't because I wouldn't have actually melted and instead would have still been standing there on the porch looking awfully stupid. That would have certainly upped the awkward factor.
I decided to cut my losses and reemphasize the point that we had wanted to introduce ourselves and as a very minor sub-point were hoping they could give us a tip or two for helping their dogs be quieter on the rare occasions they might happen to go on a barking frenzy. Thankfully, she warmed up a bit after we discussed her other child (a one-year-old babbling at us from the living room). We are now fully authorized to yell, "shut up!" at her dogs and/or spray water over the fence should the occasion require. It's the small victories... right?