| Actor | Role |
|---|---|
 Vera KuznetsovaNot listed | Not listed |
 Nikolai GritsenkoAnton Gulyayev | Anton Gulyayev |
 Bronius BabkauskasPyotr Gulyayev | Pyotr Gulyayev |
 Yuri GorobetsPavel Gulyayev | Pavel Gulyayev |
 Aleksandr LazarevIvan Gulyayev | Ivan Gulyayev |
 Mikhail YezepovPyotr Jr. | Pyotr Jr. |
 Vladimir ZolotukhinDoctor | Doctor |
 Vladimir LaptevCynologist | Cynologist |
 Olga LysenkoYevgeniya Svetlova | Yevgeniya Svetlova |
 Algimantas MasiulisBronislav Litovko | Bronislav Litovko |
 Tamara MuzhenkoYekaterina Gulyayeva | Yekaterina Gulyayeva |
 Anatoliy RomashinEduard Mikhalevich | Eduard Mikhalevich |
 Nadezhda SementsovaAntonina Gulyayeva | Antonina Gulyayeva |
 Vladlen PaulusArtist | Artist |
 Aleksandr NazarovStanislav Kazimirovich Kubik | Stanislav Kazimirovich Kubik |
 Vladimir IlinMiner | Miner |
| AAleksandr KirillovKonstantin Mikhaylovich | Konstantin Mikhaylovich |
 Leonid IudovYegor Yegorovich Gulyayev | Yegor Yegorovich Gulyayev |
 Viktor PavlovViktor Pavlovich | Viktor Pavlovich |
| VVladimir SichkarScientist | Scientist |
 Valentin PechnikovSivakov | Sivakov |
 Irina KalinovskayaKatya | Katya |
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