He found his late owner's grave on his own and never left.
After his owner, Miguel Guzmán, died in 2006, a German Shepherd named Capitán ran away from home in Argentina. A week later, the family found him at the cemetery, sitting by Guzmán's grave—a place he had never been. For more than 10 years, Capitán reportedly slept on his master's grave every single night, a heartbreaking vigil of love.