There are just three Northern White Rhinoceros left in the world after a fourth died yesterday at the San Diego Zoo of a bacterial infection and age-related health issues. Nola, a female, had to be euthanized. Her species is the most endangered on Earth, and the San Diego Zoo Global Wildlife Conservancy is doing all it can to preserve it from total extinction.
Nola, seen here at the San Diego Zoo Safari Park on April 24, 2015.
Photo by Jeff Keeton