COLOGNE: Cottbus Zoo in eastern Germany has achieved an important breeding success with rare Chinese leopards and on Thursday it informed the public of the recent birth of twin leopards. Chinese leopards have lived at Cottbus Zoo for decades and the zoo has already bred them successfully in the past. But with the first birth of a new breeding pair, it was “particularly nice when everything went well,” Jens Kammerling, director of the Cottbus Zoo, told the Niederlausitz Aktuell, a regional online news platform. The two cubs are six weeks old and do not yet have names, as it was only discovered last week that the twins are both males, according to Kammerling.