Capitoline Wolf. This statue of a she-wolf is supposed to date back to the IVth or V th century BC, the twins (Romulus and Remus have been added in the late XV th century. Apparently, the statue is not as old as it it thought according to this BBC article. As of august 2010, the museum's official version still states that the statue is an authentic Etruscan work.
Capitoline museum, Rome Italy.