Three-month-old giant panda cubs are pictured at the Zoologischer Garten zoo in Berlin, Germany, November 27, 2019. /VCG Photo

Berlin adult panda Meng Meng gave birth to twins on August 31, 2019, which were the first giant panda offspring in Germany. /VCG Photo

On loan from China, Meng Meng and male panda Jiao Qing arrived in Berlin in June 2017. While the cubs were born in Berlin, they must be returned to China within four years after they have been weaned. /VCG Photo