Topic summary
Beasts of burden

Extracted from the Wikipedia article Working animal.
Transportation
Some animals are used due to sheer physical strength in tasks such as ploughing or logging. Such animals are grouped as a draught or draft animals. Others may be used as pack animals, for animal-powered transport, the movement of people and goods. Together, these are sometimes called beasts of burden. Some animals are ridden by people on their backs and are known as mounts. Alternatively, one or more animals in harness may be used to pull vehicles.