Research reported by Larson and colleagues last year in Science suggests that
dog domestication happened at least twice, once in Europe and once in East Asia (SN: 7/9/16, p. 15).
Not exact matches
Although Veeramah and colleagues see a split between eastern and western
dogs, that split probably
happened after
domestication took place.
Pipes» study is an interesting example of what might have
happened to
dogs» brains during
domestication, he said.
«Our working hypothesis is that
dogs and humans probably evolved some of these skills as a result of similar evolutionary processes, so probably some things that
happened in human evolution were very similar to processes that
happened in
dog domestication,» MacLean said.
Understanding the physiological changes
happening in rats will also help to better assess the biological effects of
domestication in longer - lived animals such as
dogs and horses.
Meanwhile, it also highlights research showing that the
domestication of
dogs happened before the emergence of agricultural societies, with around 700 million to one billion
dogs in the world today.
Wynne can't say for sure whether the
domestication process
happened at multiple villages at different times, or if it
happened just once, as indicated by another recent study that looked at DNA from ancient
dog fossils.
Although this rock art gives us a better sense of how humans interacted with
dogs during this time, it's possible that
dogs were domesticated much earlier — possibly between 15,000 and 30,000 years ago — and the
domestication process maybe have
happened more than once.
Those
domestication and agrarian changes that forged a union between
dogs and man
happened long ago.
As for the genetic signatures of domesticity, Larson chalks up the differences between
dogs and cats to the intense breeding of
dogs that has
happened in the past 150 years, not to any fundamental differences in
domestication.