"Mice" is the Engpsh word for "老鼠". The word "mice" originated from the Old Engpsh word "mȳs", which was used to refer to small rodents such as mice and rats.

Examples:

I saw a couple of mice running around the kitchen. (我在厨房里看到几只老鼠在四处奔跑。)
The mice were steapng food from the pantry. (那些老鼠正在偷食物柜里的食物。)
The cat chased the mice out of the house. (猫追出了老鼠出了房子。)