The Green Ember by Patrick D. Smith

Two rabbit siblings are driven from their peaceful home by a brutal attack and drawn into an age-old struggle for their people’s future, uncovering a hidden royal legacy and joining a courageous resistance against tyrannical predators; amid peril, betrayal, and new alliances, they learn the cost of loyalty and the strength of hope as they fight to reclaim a broken kingdom and work toward the promise of a mended land.