Dancing with the Stars just got an adorable new fan. A baby koala bear that was recently born at the Australia Zoo has been named after pro Derek Hough, in honor of his Season 21 partnership with Bindi Irwin. The Australia Zoo was founded by Bindi's grandparents, Bob and Lyn Irwin, in 1970, and is currently owned by her mother Terri. On Monday's episode of Dancing with the Stars, the pairs will be dancing to the theme of "Most Memorable Year of Your Life." The zoo posted a photo of the baby koala on its Twitter feed Saturday.