"The interesting thing is that typically we think of domestication as being cows, sheep and goats, things that produce food through meat or secondary agricultural products such as milk, cheese and wool and things like that," he said.
"Those are different relationships than humans may have with dogs. The dogs are not necessarily providing products or meat. They are probably providing protection, companionship and perhaps helping on the hunt."
"And it's really interesting that this appears to have happened first out of all human relationships with animals."
Read more: http://www.foxnews.com/scitech/2012/01/24/dog-mans-best-friend-for-over-33000-years/#ixzz1kQ8nMGz4
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