Myth Busting: Skin Thickness
The Myth: Horses have thicker skin than people, and so they can't feel it when you whip/kick/spur them.
The Truth: This claim is false! Horses have thinner skin than people. The "toughness" of their skin comes from the skin cell configuration, rather than the thickness. This is why they don't break skin as often if they bite each other or rub up against something. They also have a higher number of Merkel pain receptors per area of skin, meaning they actually have a higher sensitivity to pain than people.