This Poor Puppy Lost Part of His Jaw to Cancer. Astonishingly, It Grew Back! <img width="128" height="52" src="https://www.sciencealert.com/images/2024/02/CloseUpOfTysonTheDogWhoseJawGrewBack.jpg" alt="Close up of black french bulldog with his tongue sticking out"/> The healing power of youth. https://www.sciencealert.com/this-poor-puppy-lost-part-of-his-jaw-to-cancer-astonishingly-it-grew-back