Przewalski's horses are seen at the Xinjiang Wild Horse Breeding and Research Center in Changji Hui Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region, June 2, 2020. Przewalski's horses are the only surviving horse subspecies which has never been domesticated. In China, they are mainly found in Xinjiang's Junggar Basin. Researchers at the Xinjiang Wild Horse Breeding and Research Center have applied multiple adjustments to the horse populations in order to avoid close inbreeding and achieve better preservation of the horse breed. (Xinhua/Ding Lei)

A researcher observes parasites extracted from Przewalski's horse excrement at the Xinjiang Wild Horse Breeding and Research Center in Changji Hui Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region, June 2, 2020. Przewalski's horses are the only surviving horse subspecies which has never been domesticated. In China, they are mainly found in Xinjiang's Junggar Basin. Researchers at the Xinjiang Wild Horse Breeding and Research Center have applied multiple adjustments to the horse populations in order to avoid close inbreeding and achieve better preservation of the horse breed. (Xinhua/Ding Lei)

Staff members prepare fodder for Przewalski's horses at the Xinjiang Wild Horse Breeding and Research Center in Changji Hui Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region, June 2, 2020. Przewalski's horses are the only surviving horse subspecies which has never been domesticated. In China, they are mainly found in Xinjiang's Junggar Basin. Researchers at the Xinjiang Wild Horse Breeding and Research Center have applied multiple adjustments to the horse populations in order to avoid close inbreeding and achieve better preservation of the horse breed. (Xinhua/Ding Lei)

Przewalski's horses are seen in this drone photo taken at the Xinjiang Wild Horse Breeding and Research Center in Changji Hui Autonomous Prefecture, northwest China's Xinjiang Uygur Autonomous Region, June 2, 2020. Przewalski's horses are the only surviving horse subspecies which has never been domesticated. In China, they are mainly found in Xinjiang's Junggar Basin. Researchers at the Xinjiang Wild Horse Breeding and Research Center have applied multiple adjustments to the horse populations in order to avoid close inbreeding and achieve better preservation of the horse breed. (Xinhua/Ding Lei)