Sayblee when in the "starve myself" mode, has gone down to 21 pounds. She is at GOOD weight at about 24 to 25 pounds. Right now, after nearly 2 mos of steroids and lots of eating, she is up to about 28 pounds. I am not worried as she will drop it off as soon as she is off the steroids.
Arwen should weigh around 23 to 23.5 lbs, is up to 24 1/2. its amazing that less than 2 pounds shows up on her but it does. At one point she got up to 29 pounds… cut back food and she ate poop So I put her on Hills Science DIET formula and she got down to 22 pounds and has kept it off for over a year. I think the recent weight gain was child overfeeding her in the summer. Now that I am back feeding her she is dropping again slowly.
But dog's weight is dependent on build and how they look. Ideally I like to ALMOST be able to see the back rib on a dog.
For the barking and neighbor, I hope you pointed out that his dogs bark continually?
I have used an antibarking collar on a rescue. I have neighbors, strict police codes, so I had no choice. She would bark LITERALLY from the second her feet hit the back porch til she came back inside. It took her 2 zaps to get it, and that was it... warning buzz after first bark and she would stop. She was a chow/retriever mix, btw. She was not placeable how she was so I have no regrets using the collar. I took her to a teacher and family in PA almost 6 yrs ago... they think she is the best thing since sliced bread.
So it depends on your situation. If you have TIME, you can retrain not to bark. If not, the citronella or shock collars are effective.
LOL you might print out a copy of these for your neighbor!
http://www.news.cornell.edu/Chronicle/96/6.6.96/barking.html
http://www.ddfl.org/behavior/barking.pdf
http://www.usask.ca/wcvm/herdmed/applied-ethology/behaviourproblems/barking.html