A Wolf Called Wander by Rosanne Parry-Used

Swift, a young wolf cub, lives with his pack in the mountains learning to hunt, competing with his brothers and sisters for hierarchy, and watching over a new litter of cubs. Then a rival pack attacks, and Swift and his family scatter.

Alone and scared, Swift must flee and find a new home. His journey takes him a remarkable one thousand miles across the Pacific Northwest. The trip is full of peril, and Swift encounters forest fires, hunters, highways, and hunger before he finds his new home.

Inspired by the true story of a wolf named OR-7 (or Journey).