A staff member inspects a cloned yak at a yak breeding base in Damxung County, southwest China's Xizang Autonomous Region, July 11, 2025. A cloned yak was born via caesarean section on Thursday at a yak breeding base in Damxung County, southwest China's Xizang Autonomous Region, researchers have said.

The cloned calf weighed 33.5 kg at birth, heavier than most yak newborns, according to the researchers.

Xinhua reporters saw the calf, which has a completely black coat, at the breeding base on Friday. It was able to walk and in good health.

The project began in July 2023 as a joint initiative by a research team from Zhejiang University in east China, the Damxung County government and the Institute of Plateau Biology of Xizang Autonomous Region.

The scientists used whole-genome selection and somatic cell cloning technologies to produce the cloned yak. (Xinhua/Jigme Dorje)

This photo taken on July 11, 2025 shows a cloned yak at a yak breeding base in Damxung County, southwest China's Xizang Autonomous Region. A cloned yak was born via caesarean section on Thursday at a yak breeding base in Damxung County, southwest China's Xizang Autonomous Region, researchers have said.

The cloned calf weighed 33.5 kg at birth, heavier than most yak newborns, according to the researchers.

Xinhua reporters saw the calf, which has a completely black coat, at the breeding base on Friday. It was able to walk and in good health.

The project began in July 2023 as a joint initiative by a research team from Zhejiang University in east China, the Damxung County government and the Institute of Plateau Biology of Xizang Autonomous Region.

The scientists used whole-genome selection and somatic cell cloning technologies to produce the cloned yak. (Xinhua/Jigme Dorje)

An aerial drone photo taken on July 11, 2025 shows a yak breeding base in Damxung County, southwest China's Xizang Autonomous Region. A cloned yak was born via caesarean section on Thursday at a yak breeding base in Damxung County, southwest China's Xizang Autonomous Region, researchers have said.

The cloned calf weighed 33.5 kg at birth, heavier than most yak newborns, according to the researchers.

Xinhua reporters saw the calf, which has a completely black coat, at the breeding base on Friday. It was able to walk and in good health.

The project began in July 2023 as a joint initiative by a research team from Zhejiang University in east China, the Damxung County government and the Institute of Plateau Biology of Xizang Autonomous Region.

The scientists used whole-genome selection and somatic cell cloning technologies to produce the cloned yak. (Xinhua/Jigme Dorje)

(Xinhua/Jigme Dorje)

(Xinhua/Jigme Dorje)

(Xinhua/Jigme Dorje)

(Xinhua/Jigme Dorje)