The aim of this essay is to examine four floor Mosaics from private dwellings in Pompeii. These 1st century floor Mosaics decorate the fauces of the houses and they all depict watchdogs. The first question to be asked is if there are other common features between the houses that can explain why these house owners chose this figure. The second question is if you can reveal, from the existing knowledge about the house owners, the same information. The third question to be asked is if the watchdog Mosaics have anything to do with the location of the houses in Pompeii.