Dog DNA reveals ancient trade network connecting the Arctic to the outside world
Isolated communities traded canines and other goods with the Near East and Europe
![two Siberian sled dogs](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2021/10/093021_FK_siberian-dogs_feat.jpg?fit=1030%2C580&ssl=1)
Siberian dogs such as these were isolated from other canine populations for thousands of years, until their owners started trading with the outside world.
Robert Losey/Univ. of Alberta