A pack animal, also known as a sumpter animal or beast of burden, is an individual or type of working animal used by humans as means of transporting materials by attaching them so their weight bears on the animal's back, in contrast to draft animals which pull loads but do not carry them.
Horse packing with traditional Australian pack saddle
A nomad's pack camel in Eyl, Somalia
Pack reindeer with Sami driver from The land of the midnight sun, c. 1881
1900 advertisement showing pack yaks in Tibet
A working animal is an animal, usually domesticated, that is kept by humans and trained to perform tasks instead of being slaughtered to harvest animal products. Some are used for their physical strength or for transportation, while others are service animals trained to execute certain specialized tasks. They may also be used for milking or herding. Some, at the end of their working lives, may also be used for meat or leather.
A bullock team hauling wool in New South Wales
Traditional farming methods using oxen
The horse-drawn winch of a former limestone quarry (France)
A pack llama