How Dogs and Humans Changed the World Together for 15,000 Years!

For thousands of years, our furry best friends have been changing alongside us to become the ultimate helpers. From super-strong sled dogs in the freezing Arctic to brave rainforest hunters, dogs actually reshaped their own bodies to fit into our human worlds. Imagine if your pet pup was once a woolly sheep-dog or a high-altitude climber that could breathe thin mountain air!