Tomatos are good for your corgis....mine love them. I give them 1/4 cup tomato juice to combat the dreaded yellow spot on the grass. Otherwise, they are still eating my tomatos that are on the cupboard ripening from the summer. They probably get at least 1/2 a large tomato a day. I grew these yummy large Yellow Boy variety last and this year. They are a low acid. Great producers. Real good.