I feed raw eggs to my dogs. I feed a homemade diet to the three dogs and have for about 6 years. Many people who feed prepared foods (kibble) ad eggs to their dogs food as part of adding fresh food to the diet.
Raw eggs can cause loose stools if the dog eats more eggs than they are used too. They are very rich.
Remember that dogs lick their own butts, and if given the opportunity will lick other dogs butts, the cat's butt, eat "snacks" from the litter box, play with filthy tennis balls that are for sure covered in germs, and eat all sorts of unknowns that they come across. They have an even more acidic environment in their stomachs than people do, as well as a shorter digestive tract. They can handle bacteria in their food better than we can.
So, in summary, as someone who has put considerable research into the best foods to feed my dogs (it is a hobby of mine) I consider raw eggs to be a healthy and safe addiction to the dogs diet. Just watch the quantity at first