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The draft horse team.
The word "draft" is derived from the Anglo-Saxon word dragan, meaning to draw or to haul. It's unclear as to when and where draft horses became the animal of choice for farmers and wagoneers, but their role as powerful harness horses has inspired selective breeding for centuries.
Horses as tall as 18 hands high and weighing 2,000 pounds are common in such breeds as the Percheron and Shire. Breeders selected not only for size and strength, but perhaps more important, a quiet calm temperament, distinguishing draft-horse breeds as cold-blooded animals. Original public domain image from Flickr
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