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  • hentai 3d视频泽艺影城
    hentai 3d视频泽艺影城
    主演:
    类型:纪录
    导演:
    地区:美国
    年份:2020
    语言:英语
    备注:HD
    更新:2021-06-16
      hentai 3d视频泽艺影城Dogs have long been dependable companions by our sides. But it wasn’t always that way, and a look at their closest living relative, the wolf, makes it clear why. Research into dog domestication and intelligence offers clues into the human-dog relationship. And analyzing dogs’ brain activity and genes may even help answer whether dogs are in it for the food—or if they really love us.