Explore horses--some of the strongest, fastest, and most beautiful mammals in the world! Did you know that a horse can eat 25 pounds of food a day? Or that humans first domesticated horses 4,000 years ago in Asia? Discover all the ways in which horses have helped humans in history and everyday life! Ignite your scientific mind with fun facts, activities, and experiments. Try this: Do 20 jumping jacks, then pay attention to...