Some breeds of cow that have horned females include the common Jersey breed, Holstein cattle, Highland cattle and Kerry dairy cattle. A complete listing of breeds with horned females would be a listing of every horned breed. In all horned breeds of cow, males and females alike have horns.
In cows, the state of having horns is not related to gender but to the presence or absence of a particular gene. The hornless gene, also known as the polled gene, affects males as well as females. The hornless gene is dominant over the gene for horns, and many horned breeds also have hornless strains.
