Having no one to help her with her problems, a widowed mouse visits the rats whose former imprisonment in a laboratory made them wise and long lived. Mrs. Frisby, a widowed mouse with four small children, is faced with a terrible problem. She must move her family to their summer quarters immediately, or face almost certain death. But her youngest son, Timothy, lies ill with pneumonia and must not be moved. Fortunately, she encounters the rats of NIMH,...

"Orris the rat lives alone in an old barn surrounded by his treasures, until the day his solitude is disrupted by a sudden flutter of wings and a loud screech. A small owl has gotten caught in a trap in the barn. Can Orris "make the good and noble choice" (as the king on his prized sardine can might recommend) and rescue the owl, despite the fact that owls and rats are natural enemies? And if he does, will he be ready for the consequences?"-- Provided...

Rat brothers Louie and Ralphie Ratso try to prove they can be as rough and tough as their father in the Big City, but every time they try to show how tough they are, they end up accidentally doing good deeds instead.

With a little courage and a lot of practice, Little Rat overcomes her fear of sailing.

The Librarian helps a girl defeat the horrors lurking in the basement of her favorite bookstore.

While searching for the Rat with the Human Face, friendships fray as club members Dave and Lyle compete for Marilla.

A lavender rat that has escaped from a laboratory, and a lonely boy whose parents are scientists, meet on an orbiting space station, communicate by email, and ultimately find themselves in need of each other's help and friendship. A literate lavender rat, fleeing from an experiment, accidentally stows away on a space station. In addition to the scientists, technicians, and astronauts on board, there is a lonely young boy who attracts the rat's attention,...

Alone in his apartment during Christmas vacation, eleven-year-old Eric finds himself caught in a battle between a strange exterminator and the rat he wants to kill.

Nat the Cat has a hat. Pat the Rat has a nicer hat. Nat the Cat wants a hat like that. Will the two friends have a spat?

"Nat the Cat is trying to take a nap. Will he be able to rest?"-- Front jacket flap.