What is a small mammal with brown fur and tipped tail?

There are many small mammals with brown fur and a tipped tail. To help narrow it down, I need more information! Tell me:

* Where does this mammal live? (e.g., North America, Europe, forest, desert)

* What is its size? (e.g., mouse-sized, squirrel-sized)

* What does it eat? (e.g., seeds, insects, plants)

* Does it have any other distinctive features? (e.g., long ears, bushy tail, stripes)

Once I have more details, I can give you a more specific answer!