The true story of the most decorated dog in American military history - Sgt. Stubby - and the enduring bonds he forged with his brothers-in-arms in the trenches of World War I.
| Actor | Role |
|---|---|
 Logan LermanRobert Conroy (voice) | Robert Conroy (voice) |
 Helena Bonham CarterMargaret Conroy (voice) | Margaret Conroy (voice) |
 Gérard DepardieuGaston Baptiste (voice) | Gaston Baptiste (voice) |
| JJim PharrHans Schroeder / Col. Ty (voice) | Hans Schroeder / Col. Ty (voice) |
| JJordan BeckElmer Olsen / Shopkeeper (voice) | Elmer Olsen / Shopkeeper (voice) |
| JJason EzzellSgt. Ray Casburn (voice) | Sgt. Ray Casburn (voice) |