It sounds like a soft, melodious “murmur” — most cat owners have heard their pets cooing or trilling. However, very few know that there is a special meaning behind the sound. PETBOOK editor and cat ...

Scientists in Australia recorded the first ever audio of echidna vocalizations, a sound which may be linked to reproduction, a study said. Photo from Michael Jerrard via Unsplash As three spiky ...

As three spiky creatures walked out of a rock cave in Australia, a nearby microphone captured their wheezing, exhales and “cooing.” The first-of-its-kind audio settled a scientific debate and ...