Romeo, the last known frog of his kind, found a Juliet. Did the match save their species?

For 10 years, the world's last known Sehuencas water frog, named Romeo, lived alone in captivity in a Bolivian museum. Repeated expeditions by biologists into the nation's cloud forests, the only place the amphibians exist, had turned up no new specimens. The once-plentiful frogs had been all but wiped out by a killer fungus, widespread habitat loss and an invasive trout that dines on frog eggs.