Early dogs had jobs, like pulling sleds in the tundra or hunting ... outfitting them with a load-bearing frame called a travois that the animals pulled behind them. Losey told Kristin Romey ...

They concluded that the drag marks were most likely the result of the humans pulling travois ... Plains in more recent times used travois pulled by dogs, and later horses, to move tipis ...

The dogs have to be what's known as northern breeds, which means they have this special coat that protects them from the cold. And they also have to be really comfortable pulling stuff long distances.

There is no evidence of animals being used to pull the travois at Alkali Flat ... and were commonly associated with dogs or horses in historical documents and traditions. The findings challenge ...