Clydesdale horses are among the largest horse breeds in the world, and a popular question that horse enthusiasts often have is if it is the biggest horse breed or whether there are other horse breeds that are bigger. While a Clydesdale is definitely very tall and big, there have been several horses which are bigger according to world records. For instance, the largest horse in the world, Sampson, was a Shire horse and was as tall as 21.25 hands. Clydesdale horses are usually about 18 hands tall and weigh 2,000 pounds. Shire horses, on the other hand, may be about the same height on average, but they are generally larger in size and heavier, weighing about 2,600 pounds. Another horse breed that could be bigger than a Clydesdale is a Percheron, whose average weight is 2,600 pounds and is usually about 18 hands tall. In fact, in 2005, the Guinness Book of World Records holder for the tallest living horse was Goliath, a Percheron. This title now goes to Big Jake, a Belgian draft horse from Wisconsin.