Seems to be 50/50 weather to feed them or not. I was trying to search and this is what I came up with. So for now, we will still give them some of ours.

http://www.k9web.com/dog-faqs/health-care.html
Vegetables
Many dogs appreciate vegetables. In particular if your dog is fond of munching on the grass, you can often alleviate this by feeding vegetables to your dog. Stick with fresh, raw foods: carrots, broccoli and cauliflower stems, apple cores, etc are popular. Stay away from potatoes and onions.


http://www.skansen.com/nutrition/diet.htm
RAW VEGETABLES
A raw grated carrot daily, broccoli stems, or any cooked vegetables like potatoes etc., are good too. Feed cauliflower, brussel sprouts, corn (never on the cob), pumpkin, squash, peas, beans, as well as brown rice, oat flakes, wheat germ, wheat bran and wholemeal bread.

http://www.vegetariandogs.com/Vegetables Vegetables are highly digestible by dogs after cooking. Baking is best for nutrient retention; but boiling is fine, if you also use the water in the food. Dogs love most cooked vegetables, but may prefer them cut into small pieces or pureed. Whole cooked potatoes make an excellent snack. Just fill a pan with potatoes and place in the oven for about an hour at 350 degrees. After cooling, store in the refrigerator and give as snacks. As much as 1/3 of the basic recipe can consist of "extra" vegetables without greatly altering the nutrient balance.