Animal engine

An animal engine is a machine powered by an animal.

Horses, donkeys, oxen, dogs, and humans have all been used in this way.

[1][2][3][4] An unusual example of an animal engine was recorded at Portland, Victoria in 1866.

A kangaroo had been tamed and trained to work a treadmill which drove various items of machinery.

[5] This livestock-related article is a stub.