I’m going to start feed him carrots too, BTW!
According to this article, several foods aren’t safe for dogs or cats:
The veterinarian group also warned that many common foods are not safe for pets, including salt, garlic, onions, grapes and chocolate.
http://news.yahoo.com/s/ap/20070404/ap_on_re_us/homemade_pet_food;_ylt=AjXwOQmDn7pRADsbWYs6Mbis0NUE
You should subscribe to Whole Dog Journal and there is an excellent book I recommend called: The Encyclopedia of Natural Pet Care — by CJ PUotinen also the Nature of Animal Healing by Doctor Goldstein.