– Dogs were domesticated twice. In the ancient West and, separately, the ancient East, humans turned dogs into the fluffy friends we have today.
– At some point, ancient East dogs migrated west and met up/crossbred with the West dogs. Aw, it’s just like college. Move away, meet someone from a new town, and sparks fly!
– Looking for evidence? Follow the bones! If dogs were domesticated once, pup fossils would be oldest in one part of the world, and radiate outward over centuries of migration. But instead, the oldest fossils are more scattered! As usual, what you really need to know is how to fetch a bone.
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