As gunshots rang out at Bondi, dozens of eyewitnesses risked their lives to film the horror. This is what they wanted you to see.

A new study finds that horse whinnies are made of both a high and a low frequency, generated by different parts of the vocal tract. The two-tone sound may help horses convey more complex information.

The sound of a horse's whinny is created by the low frequency vibration of vocal cords combined with a high frequency whistle, a new study reveals.