are found within Tibetic and Gyalrongic languages. Both branches also have native terms for yak-cattle hybrids, suggesting that Tibetic and Gyalrongic speakers may have independently cross-bred yaks and cattle, predating the proto-Gyalrongic split (3221 [2169-4319] BP) from Tibeto-Gyalrongic. The oldest dated physical evidence of yak domestication is from 2,500 years BP.

Customs

In parts of Tibet and Karakorum, yak racing

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