5. Argentina
Number of horses: 3,590,000
Argentina is one of the countries that have the most horses in the world because they have a significant part in their working life as well as culture. Maybe you already know, but for those who don’t, the most famous and used horse breed in Argentina is the Argentine Criollo. This horse is considered to be the national horse of Argentina, and it is known for its stamina, endurance, and sure-footedness. Among other popular horse breeds in Argentina are Falabella and Petiso Argentino.