What happens if a dog eats chicken bones?

A dog eating chicken bones may suffer esophageal blockage, constipation, blood in stool, indigestion, and vomiting, and in severe cases the bones can pierce the stomach or intestines, causing gastritis and blood vessel blockage. Chicken bones are brittle and splinter into sharp points that cut the mouth and gut, leading to bacterial infection and inflammation.

Also, the calcium in bones is poorly absorbed and does not supplement calcium, so it is not recommended to feed dogs bones.