San Diego Zoo makes progress in ambitious effort to save endangered rhino species San Diego Zoo working to save Rhino species and last updated 2020-12-23 21:54:34-05 ESCONDIDO, Calif. (KGTV) -- The San Diego Zoo is now five years into its ambitious attempt to save a critically endangered species, the Northern White Rhino, from extinction. There are currently just two Northern White's still alive, both females who are unable to give birth. They live at a preserve in Kenya. âItâs the only thing that keeps me going, thinking that this is possible and that we can save a species," says Dr. Marisa Korody, part of the team working on the project.