Pompeii
The well preserved mosaic floor in the “House of the Tragic Poet” (also called The Homeric House or The Iliadic House), a typical 2nd century BCE Roman house in Pompeii. The vestibule floor is decorated with a mosaic of a domesticated dog leashed and chained. Below it are the words “CAVE CANEM”, an ancient warning equivalent to the modern “Beware of the Dog”.
Photo by Ludo Kuipers, Sun Oct 23, 1994