I agree, veggies and fruits are good for dogs. Mine do not particularly care for fruits but like veggies. Hot Rod cannot get enough of them.
There are some that they cannot have. Just make certain that you familiarize yourself with what is good and not. I've copied the link from the sticky in this forum so you can see what is potentially dangerous. If you should have any questions, always be sure to ask your vet.
http://www.yorkietalk.com/forums/yor...oods-dogs.html
As for cooked or raw, it depends. I feel better giving cooked carrots so they are so hard but at the same time if I cut them up into coins or thin sticks, I will give it to them--I choose not give them a big chunk because I'm afraid they might get too big a piece and choke on it.. Mine love zucchini either way, it's really a matter of preference.