Cover Characteristics: Book Covers featuring Circus

I am SO EXCITED about this week's topic! I mean, seriously: 1) Have you seen my bio? Even the mini one in the sidebar? 2) I used to do circus myself for a brief period of time---I even included a photo at the end! 3) I made this post even before I knew this would be an official topic because I just wanted to do this topic anyway. 4) Every single book on here came from either books I already own...