This rather poor and pixelated GIF is the zoopraxiscope, created by Eadward Muybridge in 1876.
The first moving picture, if you like.
The mule was highlighted by Charles Darwin as being a singular creature.
‘The mule’, he wrote, ‘always appears to me a most surprising animal. That a hybrid should possess more reason, memory, obstinacy, social affection, powers of muscular endurance, and length of life, than either of its parents, seems to indicate that art has here outdone nature.’
To be continued.