Out on the Mongolian steppe, where the horse remains the primary mode of transport, modern herders regularly remove certain teeth from yearlings to avoid potential problems. The herders typically use pliers or screwdrivers for the task. If that makes you squirm, you might want to stop reading — because archaeologists have found the earliest evidence of horse dentistry, and it’s even more cringe-inducing.

If you’re not too squeamish, however, read on, because researchers discovered not onl