研究发现人类和狗在12 000年前 在美洲形成紧密的纽带 比想象的要早 Study finds humans and dogs formed close bonds 12,000 years ago in the Americas, earlier than thought.

《科学进步》的一项新研究表明,人类和狗在大约12 000年前的美洲形成密切关系,比先前已知的大约早2000年。 A new study in Science Advances reveals that humans and dogs formed close relationships around 12,000 years ago in the Americas, about 2,000 years earlier than previously known. 研究人员在阿拉斯加发现了一只12 000年的警犬骨,有鲑鱼的饮食迹象,表明有人类提供的食物。 Researchers found a 12,000-year-old canine bone in Alaska with signs of a salmon-based diet, indicating human-provided food. Swan Point站点的这一发现表明,狼早期被驯化或驯化,但与后来的狗群的遗传联系还不清楚。 This discovery, from the Swan Point site, suggests early domestication or taming of wolves, but the genetic link to later dog populations is unclear.