Rare rhino dies at Czech zoo, leaving just four northern white rhino on Earth

Northern white rhino on brink of extinction after deaths of male in San Diego zoo last year and female named Nabire in Czech Republic this week

Only four northern white rhinos remain on earth after a 31-year-old female named Nabire died in the Czech Republic late on Monday, zookeepers said.

The animal born at Dvur Kralove zoo in the country's north died from complications of a ruptured cyst, the zoo said in a statement on Tuesday.