Humans and dogs bonded 12,000 years ago over salmon, scientists find

Early humans in Alaska were sharing their salmon catches with ancient canines 12,000 years ago. This shows that close relationships between humans and dog ancestors developed 2,000 years earlier than anyone previously thought in the Americas.The findings, published in the journal Science Advances, challenge long-held ideas about how and when wolves turned into tame companions. By studying chemical clues called stable carbon and nitrogen isotopes in fossilized bones, scientists discovered a diet packed with fish. This diet suggests these ancient animals were living right next to human camps and eating shared food instead of hunting completely on their own in the wild.The discovery at Swan PointArchaeologists working at the Swan Point dig site, located about 70 miles southeast of Fairbanks, Alaska, found an adult canine lower leg bone dating back 12,000 years.