Thanks everyone for the replies and thanks Dragondawg for the recommendation of fish oil, I had actually never heard that before but after checking into it a little, I think I will start doing that for them both. If anyone is interested, this is one of the things I found after doing a search on the internet: http://www.worldwidehealthcenter.net/articles-281.html
Weight is not a problem for either of my dogs, they are both actually in great shape. They have had their food down 24/7 their whole lives. Buddy did tend to pig out at first, but it only lasted a few days until (I guess) he just realized it would always be there. That is one thing I am glad I did with them as I now work shift-work and it seems their schedule is not so regimented, they eat when they feel like it and I don't have to worry if I am messing with their "schedule".