Boa: male yak

Yak: a castrated male yak

Nak or Dri: a female (cow) yak

Khainag (or Dzo [male] and Dzomo [female]): hybrid resulting from yak-cow cross.

Dimjo (or Dim-dzo): hybrid with yak dam

Urang: hybrid wigh cattle dam

Ortoom: backcross of female khainag with cattle or yak bulls.

Usanguzee: animal resulting from further backcrossing of ortoom females to cattle or yak bulls..