Senator Incitatus came from humble beginnings, born under the undignified name of "Porcellus," or "little pig." He rose through the ranks of chariot racehorses to become an undefeated champion, and like many sports stars, moved to politics. He got so close to the Emperor that when Caligula got married, he fretted that Incitatus would be jealous.
Caligula built the horse a palace, where Incitatus would somehow invite people to have dinner with him. The horse also owned slaves. How do you deal with being owned by a horse?
Ask any of Secretariat's competitors. ZING!
Although there's no description of Senator Incitatus' influence on policy, he was possibly the first recorded animal government official and his brave, pioneering example paved the way for other embarrassments to society, such as ...