2. Zhokhov Island Sled Dogs
Discovered on Zhokhov Island in Siberia, the 9,500-year-old sled dogs represent one of the earliest known instances of canine adaptation to Arctic conditions. These dogs were integral to human survival, assisting in hunting and transportation across the harsh, frozen landscape. Genetic studies have shown that modern sled dog breeds, such as the Siberian Husky, Alaskan Malamute, and Greenland Dog, share a significant genetic lineage with these ancient canines, highlighting their enduring legacy. (smithsonianmag.com)