how does a mouse show it is destoryed

A mouse usually shows it is destroyed by becoming inactive, not moving, or having obvious physical damage such as a flattened body, missing fur, bleeding, or severe injury. If you meant a pet mouse or a wild mouse, signs of death can also include no breathing, no response to touch, and a strong smell of decay after some time.

Common signs

• No movement at all, even when gently nudged.
• No breathing or heartbeat.
• Body is limp, cold, or stiff.
• Visible wounds, blood, or trauma.
• Strong odor of decay if it has been dead for a while.

If you meant a computer mouse

A computer mouse that is “destroyed” or broken usually shows signs like:

• The cursor stops moving.
• Buttons do not click properly.
• The scroll wheel jams.
• The mouse disconnects, flickers, or is not detected by the computer.