How Ancient Dogs Were Domesticated Twice Due to the Trade Routes of the Bronze Age

The animated video “The Origin of Dogs” puts forth the belief that canines were domesticated more than once due to the introduction of inter-region trade during the Bronze Age and the animals that came along.

…dogs were domesticated not once but twice,… many thousands of years ago somewhere in Western Eurasian humans domesticated gray wolves and the same thing happened independently far away in the East. Around the Bronze Age, some of the ancient Eastern dogs migrated West alongside their human partners and along their travels, these migrants encountered the indigenous ancient western dogs they mated with them…and effectively replaced them