An Austrian zoo that was struggling to get its koala breeding program started is enjoying success after securing the services of Edinburgh Zoo’s resident stud. The staff at Shoenbrunn Zoo had tried aphrodisiacs and even erotic movies to get local pair Bilyarra and Mirali in the mood for love — without success. But five-year-old Chumbee has lived up to his reputation since arriving in Vienna, with zoo manager Helmut Pechlaner observing that he “hasn’t stopped since he got here”. “It has been almost non-stop sex in the koala enclosure ever since, and now even our male is joining in,” he said.