MEXICO CITY, MEXICO—Archaeologists digging beneath an apartment building in Mexico City have discovered the remains of 12 dogs who were buried sometime between 1350 and 1520 A.D. Dogs were considered sacred animals by the Aztecs, who believed they accompanied human souls to the afterlife. While archaeologists have found isolated dog burials at Aztec sites before, this is the first time multiple dogs have been discovered buried together. "This is definitely a special finding because of the number of dogs and because we have found no connection to a building or with the deceased,” archaeologist Rocio Morales Sanchez told the Associated Press.