In Robert C. O'Brien's book, Mrs. Frisby and the Rats of NIMH, mice and rats work together to save their homes and lives from humans. The rats are escaped lab animals whose time in captivity has given them wisdom and longevity. Mrs. Frisby is a simple country mouse, living in the field of a farmer. The novel explores the dual-edged reality of rats and mice co-existing with humans. Food and supplies can be plentiful, but so can cats, traps and poisons.
In Daniel Schwabauer's novel, Runt the Brave, humans are not a factor, just a blueprint. Mr. Schwabauer's memorable characters have been wonderfully anthropomorphized (given human traits and characteristics) into generals, royalty, villains and one very small hero. Battle tactics, betrayal and bravery factor in as the mice of Tira Nor try desperately to defend themselves and their way of life from invading rat forces.
If you're a fan of mice and rats (or even if you're not), you'll want to give both these books a read.