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The term "light horse" refers to breeds of horses that are typically lighter in build and bred for riding and speed, as opposed to heavy draft horses. These breeds, such as the Arabian, Thoroughbred, and American Quarter Horse, are known for their agility, endurance, and athleticism. They have a long evolutionary history, tracing back to early ancestors like Eohippus that were much smaller and adapted to browsing in forests. Over millions of years, horses evolved to become larger, with adaptations for grazing and running on open plains, leading to the diverse breeds we see today.123

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