This is almost comically American: Between 1830 and 1836, a bald eagle lived at the Philadelphia Mint. Named Peter, he would roam the city by day and roost in the mint at night. Fatally injured in a coining press, he was stuffed and mounted and is currently on display in the lobby.
He is said (uncertainly) to have been the model for the eagle on U.S. silver dollars issued between 1836 and 1839 and the Flying Eagle cents of 1856-1858.