To be honest I really do not see the difference in a dog getting eaten over a chicken/cow/pig etc. I personally think eating animals is wrong but all animals are equal in my books. It's no more gross than had that been a lamb.
1. If it has to potential to outlive me, I won't eat it.
2. If it has the potential to outsmart me, I won't eat it.
3. If it is diseased, or has an unknown background (could have been diseased or treated with some funky chems, etc.)
4. If it's a lobster, because they are dang cool.
So that outs alligators, turtles, tortoises, some snakes, octopus, lobster, large parrots, dolphin, some fish, and whale. Weird that none of them are legged mammals. Anyway, my favorite most beloved kind of animal are cattle, and I eat them every day because I'm part of the food chain. Honestly, I really like cattle a lot better than horses, and am not sure why horses are protected from being eaten in some states, as long as they are treated humanely. To my knowledge there is no risk of disease transmission to humans from horse meat.
Back on topic, to me it is gross because those dogs fit #3. Who knows what kind of crap they were eating, vaccinations they had, sicknesses. And being unregulated meat who knows what kind of shape it was in. Also, I have to admit a soft spot for strays/dogs anyway. I wouldn't choose to eat one knowingly, unless it was a survival situation. Even then, I would probably try and train it to kill a raccoon for me or something.