Enlarge (credit: Elizabeth Tersigni) Genomics researcher Anders Bergstrom and his colleagues recently sequenced the genomes of 27 dogs from archaeological sites scattered around Europe and Asia, ranging from 4,000 to 11,000 years old. Those genomes, along with those of modern dogs and wolves, show how dogs have moved around the world with people since their domestication. All the dogs in the study descended from the same common ancestor, but that original dog population split into at least five branches as it expanded in different directions.