How about dairy products for dogs such as milk, cheese?

Your dog will get bad gas at least. Humans (and not all) are the only animals that are lactose tolerant after weening in infancy. Hard cheeses and aged cheeses have less lactose, but I wouldnt feed a dog.

Dogs are carnivores and must have animal based protein. They can get this from eggs, we fed my old dog our egg yokes every morning.

You have to watch with dairy products for dogs – the fat in whole milk and most cheeses could cause pancreatitis, which is a very dangerous condition that could, over time, lead to internal bleeding and death. I would avoid milk totally. My vet said my dog could have a little bit of non-fat yogurt every day, and a tiny tiny bit of low-fat cheese no more than once a day. The vet said eggs are fine – like no more than 1 per day. Apple slices are fine (just no seeds – dangerous!) – carrots are fine – banana slices fine – cooked sweet potatoes fine – pumpkin fine – green peas fine. A little bit of corn is fine (but don’t be surprised if you see kernals in his #2 in the yard!). No cob tho – they could choke – cut off the corn kernals first. Avoid onions, garlic and grapes and raisins – could cause big kidney problems in dogs.