Here's why:
* Rabies is a viral disease transmitted through saliva. A cat would only get rabies if it was bitten by an infected animal, like a rabid raccoon, bat, or other mammal.
* Mice are not a primary reservoir for rabies. While mice can technically get rabies, it's extremely rare.
So, even if a cat kills a mouse, it's highly unlikely the mouse was carrying rabies, and there's no risk of the cat contracting the disease.