Bats have an impressive vocal range of up to seven octaves. To make their low-frequency calls, researchers say bats use the same trick as death metal growlers and throat singers. If you've ever sung ...

Many animals produce sound to communicate with each other, and bats are no exception. But bats are extreme when it comes to sound production. Bats can produce a range of frequencies, also known as the ...

If you've ever sung karaoke, you're aware that the vocal range of most humans is pretty limited - three octaves maybe, maybe four or five if you're really good, like Mariah Carey. But even Mariah ...