What is the third largest breed of horse?

There's no universally agreed-upon "third largest" breed of horse, as breed size can vary significantly even within a breed. However, some contenders for the title include:

* Percheron: This draft horse breed is known for its massive size and strength, often reaching over 17 hands (68 inches) tall.

* Clydesdale: Another draft breed, Clydesdales are recognized by their distinctive white "feathers" on their legs. They can also reach over 17 hands tall.

* Belgian: Belgians are incredibly muscular and powerful horses, often exceeding 17 hands in height.

Ultimately, the "third largest" depends on how you define "largest" and which breeds are included in your comparison.