At Ashkelon, in Israel, archaeologists have found a very large dog cemetery. The cemetery dates from the fifth century B.c., when that area was part of the Persian Empire. So far, about 1,000 dog graves have been found in the cemetery. Archaeologists are not certain about the reason for so many graves, but they believe that dogs must have been very important for the people there. In fact, all of the dogs died of natural causes and were buried very carefully. Perhaps