epa04854497 Visitors look at the restored mosaic of a dog with the inscription 'Cave Canem', an ancient 'Beware of the Dog' warning sign, at the entrance of the House of the Tragic Poet at the Pompeii archaeological site near Naples, Italy, 20 July 2015. The black-and-white mosaic has been restored and returned to the public eye. The work on the ancient canine is just one in a series of measures aimed at restoring and protecting Pompeii, a UNESCO World Heritage Site, for future generations, according to Italian Culture Minister Dario Franceschini. EPA/CIRO FUSCO
