Some dogs are allergic to corn and should therefore avoid corn flakes. Otherwise, it's safe for dogs to eat corn flakes, but keep in mind that the cereal is high in carbohydrates and contains zero protein, so you're feeding your pet empty calories that don't provide much lasting energy.
Can dogs have cornflakes and milk?
If you do want to give your dog a bit of corn flake then please do so without the milk. A lot of dogs are lactose intolerant so a combination of corn flake and milk can cause problems with a dog's stomach. It can be quite a challenge to figure out what else is and isn't safe for dogs to eat when it comes to human food.
Can dogs have cornflakes for breakfast?
While not necessarily toxic in small doses, cereals that contain high amounts of sugar and have no nutritional value should be avoided. These include cereals such as Lucky Charms, Fruit Loops, and Frosted Flakes, among many others.
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