Wow! Thank you so much for your responses. You have definitely turned me in the right direction as far as choosing foods for his diet.
And just as Ellie May pointed out, it is DEFINITELY time to find some consistent doggie friends--BOY he loves his playtime!!! I have been considering doggie-daycare; however he is not neutered (and thats a whole different thread by itself! lol).
Thanks so much for your help!!