I was recently asked whether a cow with eight teeth can be regarded as an old cow. It is a complex question, because livestock, unlike horses and donkeys that have incisors or cutting teeth on both the top and bottom gums, have incisors only on the bottom gums.
While sheep, goats and cattle do have molars on the back aspects of the upper gums in order to crush grass or grains, the top gum in front has a toothless pad that is