The frog was named Dendropsophus ozzyi by the scientists who discovered it. One of them, Pedro Peloso, tells National Geographic: "As soon as I heard its call, I knew it was a new species. I had never heard anything like it.

"We kept talking about the 'bat frog,' which led to us talking about being fans of Ozzy Osbourne and Black Sabbath." Peloso and colleagues found the 0.75-inch amphibian in 2009 as part of a survey of Floresta Nacional de Pau-Rosa.