동물원 측은 인공수정 후 석 달 뒤인 지난 6월에야 초음파 검사로 룬룬의 임신 사실을 알았지만 쌍둥이를 밴 사실은 둘째가 세상으로 나오면서 알았다고 한다.
In line with the zoo, it was just in June, 3 months after synthetic insemination, that they learned that Runun ended up being expecting with an ultrasound scan, but that she had been expecting with twins came to light as soon as the second kid arrived.