Because chickens belong to poultry, the structure of poultry bones is hollow bones, and chicken bones bitten by dogs are like sharp blades, which may scratch or even pierce the gastrointestinal tract after entering it. Dogs with gastrointestinal bleeding will have symptoms such as bloody stool, pulling the only child and vomiting. Severe cases require surgery to remove bone fragments from the intestine. Therefore, never feed bones to puppies, especially small dogs, and pay special attention.
As for "the harm of eating duck bones to the dog's stomach", I looked up some information on the Internet, and there was no clear answer, except a summary-it is best not to eat chicken and duck bones, because they are easy to crush the throat and stomach, and the broken bones are easy to break into very sharp and thin bone pieces, which will scratch the dog's mouth, esophagus and stomach and cause bleeding.