Sunday, November 24, 2013

When, Where Did Dogs Become Man's Best Friend? – Health News …

Dogs are practically part of many human families, but it wasn't always that way. At some point in history, biologists think humans figured out how to tame wolves. Over time, the ones that lived with humans evolved to have traits 



When, Where Did Dogs Become Man's Best Friend? – Health News …

No comments:

Post a Comment