Mice and rats vocalize. To us, many of the sounds they make are ultrasonic—at too high a frequency to hear. But if we slow the calls down, they sound like squeaks. And not all squeaks are the same.

Research from the University at Buffalo suggests that rodents produce ultrasonic vocalizations (USVs) to influence particle movement, enhancing their olfactory reception. This finding challenges ...

You can hear the ultrasonic vocalizations made by a rat when it is being tickled by a researcher. The vocalizations have been transposed to the human audible range.

Ultrasonic vocalizations (USVs) in rats are thought to contain ecological signals reflecting emotional states. These USVs are centered on 50-kHz, and frequency modulation (FM) is hypothesized to ...