The National Zoo engaged in a rare bit of trash talking on Twitter Thursday, and Ann Romney's horse Rafalca bore the brunt of it.

Tweeting to Jan Ebeling, who rode Rafalca for the Olympic dressage competition, the zoo had this to say: "Your @Olympics horse ain't got nothing on me! I'm black and white and classy all over!" Accompanying the burn was a photo of one of the zoo's Grevy's zebras.

Adding injury to insult, Rafalca, a 15-year-old Oldenburg mare, placed 13th at day one of the dressage individual Grand Prix.