Some owners even bury their dead pets in special burial grounds.
In previous escapades the professor barely survived after uncovering an ancient burial ground in Japan's hinterland.
Some years back, a brave young boy in a small town was challenged by his friends to fix a nail in a tree situated in the middle of a burial ground at midnight.
The four-year excavation, which also turned up other ruins, including a necropolis burial ground, was carried out by a group of Italian and British archaeologists.
