The term 'Mouselike Mammal' can be broken down into two crossword solutions: SHREW (5 letters) and BAT (3 letters). Shrews are small mammals that are closely related to moles, and they are found in many parts of the world. Bats are the only mammals capable of true flight, and they are found on every continent except Antarctica. Both shrews and bats are nocturnal animals, meaning they are active at night.