照片由 Sergei Starostin 拍摄 Emerging from the mountainous regions of Tibet, the Tibetan Mastiff is renowned for its majestic size and protective nature. Historically serving as guardians for livestock, ...

科罗拉多州阿斯彭的栗色钟声。图片由 Rhododendrites 提供，CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0，来自 Wikimedia Commons ...