Paweł Nowisz

Rysio

Marian Opania

Stasio

Leon Niemczyk

Dogcatcher / Professor Kazio

Hanna Małkowska

Rysio's mother-in-law / Cook

Mirosława Marcheluk

Rysio's wife

Krystyna Feldman

Master's degree holder

Lena Wilczyńska

Master's degree holder in a dog shelter

Wiesław Drzewicz

Mr. Józio

Władysław Dewoyno

Professor

Wirgiliusz Gryń

Rysio's neighbor

Mirosław Szonert

Vet

Franciszek Trzeciak

Dogcatcher's helper

Eugeniusz Wałaszek

Man with a dog

Zofia Plewińska

Jerzy Moniak

Waiter (uncredited)

Maria Probosz

Rysio's pupil (uncredited)