Many dogs find this very tasty. A raw egg contains a lot of fat, proteins and vitamins. The protein is easily absorbed by the body. It is also very good for the coat. It is best to give this together with the skin so that the egg and shell ratio is good.
You can also peel the skin (mix it with egg white and egg yolk if necessary). It can also be used without a skin, but there is a risk that the dog gets diarrhea due to the lack of calcium (from the skin).
