1. USA
Number of horses: 10,150,000
Back in 2011, there were 10.150 million horses in the United States, and around 4.6 million citizens were involved in the horse business. There are many Native American horse breeds that you can still see in America today, and some of them are American Quarter Horse; known for its ability to easily win a quarter-mile race, Southeastern and Appaloosa Horse. Today, The United States is still on top of the list of countries that have the most horses in the world.