CHINA-QINGHAI-TIBET PLATEAU-YAK-CATTLE-BREEDING (CN)

CHINA-QINGHAI-TIBET PLATEAU-YAK-CATTLE-BREEDING (CN)

(231217) -- XI'AN, Dec. 17, 2023 (Xinhua) -- This cellphone photo taken on April 8, 2022 shows yaks by the Banggong Co in Rutog County, southwest China's Xizang Autonomous Region. A new archaeological study has shown that inhabitants of the southern Qinghai-Tibet Plateau engaged in crossbreeding of yak and cattle in the high-altitude region at least 2,500 years ago. TO GO WITH "Ancient Tibetans crossbreed yak, cattle 2,500 years ago: study" (Xinhua/Shen Hongbing)

CHINA-QINGHAI-TIBET PLATEAU-YAK-CATTLE-BREEDING (CN)

CHINA-QINGHAI-TIBET PLATEAU-YAK-CATTLE-BREEDING (CN)

(231217) -- XI'AN, Dec. 17, 2023 (Xinhua) -- This cellphone photo taken on April 10, 2022 shows yaks in Ngari Prefecture, southwest China's Xizang Autonomous Region. A new archaeological study has shown that inhabitants of the southern Qinghai-Tibet Plateau engaged in crossbreeding of yak and cattle in the high-altitude region at least 2,500 years ago. TO GO WITH "Ancient Tibetans crossbreed yak, cattle 2,500 years ago: study" (Xinhua/Shen Hongbing)

CHINA-QINGHAI-TIBET PLATEAU-YAK-CATTLE-BREEDING (CN)

CHINA-QINGHAI-TIBET PLATEAU-YAK-CATTLE-BREEDING (CN)

(231217) -- XI'AN, Dec. 17, 2023 (Xinhua) -- This cellphone photo taken on April 16, 2022 shows cattle in southwest China's Xizang Autonomous Region. A new archaeological study has shown that inhabitants of the southern Qinghai-Tibet Plateau engaged in crossbreeding of yak and cattle in the high-altitude region at least 2,500 years ago. TO GO WITH "Ancient Tibetans crossbreed yak, cattle 2,500 years ago: study" (Xinhua/Shen Hongbing)

Japanese giant salamander threatened by crossbreeding

Japanese giant salamander threatened by crossbreeding

KASHIHARA, Japan - A Japanese giant salamander is captured during a field study on June 27, 2014, in Uda, Nara Prefecture, western Japan. Experts warn that increasing crossbreeding with Chinese giant salamanders, an alien species, is threatening to wipe out the native species, designated as a special "natural monument" in Japan.

Japanese giant salamander threatened by crossbreeding

Japanese giant salamander threatened by crossbreeding

KASHIHARA, Japan - Researchers examine a Japanese giant salamander captured during a field trip on June 27, 2014, at a river in Uda, Nara Prefecture, western Japan. Experts warn that increasing crossbreeding with Chinese giant salamanders, an alien species, is threatening to wipe out the native species, designated as a special "natural monument" in Japan.

Japanese giant salamander threatened by crossbreeding

Japanese giant salamander threatened by crossbreeding

KASHIHARA, Japan - Researchers examine a Japanese giant salamander captured during a field trip on June 27, 2014, at a river in Uda, Nara Prefecture, western Japan. Experts warn that increasing crossbreeding with Chinese giant salamanders, an alien species, is threatening to wipe out the native species, designated as a special "natural monument" in Japan. (Kyodo)