I remember once my computer made funny squeaky noises. It made the noises when I turned the scroll wheel on the mouse, sometimes when using the joystick, and at (seemingly) random intervals otherwise.

How does a mouse make this sound? (SOUNDBITE OF MOUSE SQUEAKING) MONTAGNE: That really is the squeak of a mouse. Some researchers tried to find out just how they did it.

The squeak of a mouse tells most people to buy a mousetrap, but it tells some researchers a lot more. According to an April 1 study in PLoS ONE, mouse noises indicate certain states of mind, and ...

NELL GREENFIELDBOYCE, BYLINE: If someone asked you what kind of sound a mouse makes, you'd probably go, squeak. But mice also make some sounds in the ultrasonic range that humans can't hear.