![Veterinarians work during an artificial insemination procedure on Ginni, an Asiatic lioness, at Prague Zoo, Czech Republic, January 3, 2019. (Photo/Agencies)](http://www.ecns.cn/hd/2019/01/04/7bb751b491394705ab2d129759ecc65a.jpg)
Veterinarians work during an artificial insemination procedure on Ginni, an Asiatic lioness, at Prague Zoo, Czech Republic, January 3, 2019. (Photo/Agencies)
![Veterinarians prepare Ginni, an Asiatic lioness, for an artificial insemination procedure at Prague Zoo, Czech Republic, January 3, 2019.(Photo/Agencies)](http://www.ecns.cn/hd/2019/01/04/4ef75e737e40436cbf5aec049d4bb691.jpg)
Veterinarians prepare Ginni, an Asiatic lioness, for an artificial insemination procedure at Prague Zoo, Czech Republic, January 3, 2019.(Photo/Agencies)
![Veterinarians work during an artificial insemination procedure on Ginni, an Asiatic lioness, at Prague Zoo, Czech Republic, January 3, 2019. (Photo/Agencies)](http://www.ecns.cn/hd/2019/01/04/622f41c2bd0e42a2b19b7ecacd03d8da.jpg)
Veterinarians work during an artificial insemination procedure on Ginni, an Asiatic lioness, at Prague Zoo, Czech Republic, January 3, 2019. (Photo/Agencies)
![A veterinarian shoots a tranquilizer dart at Ginni, an Asiatic lioness, before an artificial insemination procedure at Prague Zoo, Czech Republic, January 3, 2019. (Photo/Agencies)](http://www.ecns.cn/hd/2019/01/04/e0295fb823914a73a091d7196d7c2ba9.jpg)
A veterinarian shoots a tranquilizer dart at Ginni, an Asiatic lioness, before an artificial insemination procedure at Prague Zoo, Czech Republic, January 3, 2019. (Photo/Agencies)