Apuleius

The basic plot of the book is our young man Lucius spies a witch who has learned to transform herself into various types of birds. When she is gone, he tries out the same potions, but by grabbing the wrong flask, he is turned into a donkey, not a talking donkey, but a braying donkey who has kept his human intelligence and human tastes. Though there are scattered penitential regrets, mostly our donkey is able to spy on the crimes and indiscretions of both robbers and cheating lovers to provide the reader with many titillating tales. In the final chapter, the goddess Isis appears to him in a dream, telling him what he needs to do to be transformed back into a human. […]