Barry Flanagan / Thinker On A Rock, Gift of John and Mary Pappajohn, Des Moines, Iowa; Image © 2005 Board of Trustees, National Gallery of Art, Washington

British sculptor Barry Flanagan’s Thinker on a Rock whimsically alludes to one of the world’s most famous images of human contemplation: Auguste Rodin’s Thinker (1880). Cast in bronze in 1997, our reasoning rabbit now sits in the sculpture garden of the National Gallery of Art, in Washington, DC.