What does a horse signal with its ears? -- How well can horses hear? -- How many sounds does a horse make? -- What does a horse signal with its tail? -- What does a horse signal with its neck? -- What does a horse signal with its body? -- What does a horse signal with its legs? -- How expressive is a horse's face? -- How good is a horse's sense of smell? -- How is horse society organized? -- What is the lifespan of the horse? -- How fast can horses run? -- What is horsepower?