While other animals like whales, dogs and bats use ultrasound, it's the first recorded case of "defensive ultrasound" being used in frogs. Sound is ... screaming with a high-frequency audio ...

Ultrasound is produced by high frequency vibrations beyond the range of human hearing. The frequency of ultrasound is therefore greater than 20,000 hertz. Ultrasound, like audible sounds, is ...

For homeowners worried about snakes invading their property, ultrasonic snake repellents seem like an easy and harmless ...

Could rats possess a power that seems ripped from science fiction? Researchers from Harvard University and the University at ...