Abdera is a Greek city-state famous for its devotion to the horse. However, during the 5th Century B.C.E., Abdera's well-educated horses overthrew the city's government, butchering men and mules, and scandalizing women until the Greek hero Hercules quelled the revolt. It was speculated that the banished Abdera horses may have sired the Houyhnhnms, talking horses that Lemuel Gulliver had encountered in his travels.
Abdera is a part of traditional Greek and Latin myth, appearing in (among other places) the Physiologus Latinus (4th century B.C.E.).