mouse (animal); laboratory mouse
Refers to the small rodent, especially in scientific or laboratory contexts. For the animal in daily life, 鼠 (ねずみ) is more common.
We are breeding laboratory mice.
computer mouse
Standard term for a computer mouse. Used in both technical and everyday contexts.
The new mouse is wireless and easy to use.
I moved the mouse to bring the cursor to the top right of the screen.
To double-click an icon, you click the mouse twice.
The researchers raise mice in a sterile environment.
In the game, you operate the keyboard with one hand and the mouse with the other.
This lab uses laboratory mice to test the effects of the drug.
mouthpiece
mouth rinse; mouthwash