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纪录片人类的第一个朋友免费完整版是由魔力影视整理播放,Paul,Bandey等主演。人类的第一个朋友手机免费观看收集于互联网，请大家支持正版资源。人类的第一个朋友全集完整版讲述的是:
He has shared our lives for 20,000 years. Along the way, he has helped us find food, kept our livestock, protected us from our enemies, guided us in extreme conditions, and saved us from peril. Now, he comforts us, relieving loneliness and helping us cope with old age. How did dogs come about?
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