Dogs do just fine eating bread. Don’t shouldn’t eat a LOT of bread, but bread doesn’t hurt dogs. You mostly have to be careful of promoting yeast growth in your dog’s stomach to reduce the chances of bloat or dough toxicosis.

Before humans invented kibble, they basically ate table scraps or snagged a rabbit for dinner. People would also literally make dog biscuits as dog food.

Dogs can eat just about anything a person can (just about, not chocolate, garlic, onions, or other specific foods that can be toxic) because we evolved dogs to live and eat with us.