Heart of a dog = Sobache serdtse
Vladimir Bortko (1988)
Based on the novel of the same name by Mikhail Bulgakov, the film is set in Moscow shortly after the October revolution.
It tells the story of a surgeon called Preobrazhensky who decides to conduct an experiment, implanting the heart and brain of a tramp into a dog. The dog gradually transforms into a man but still has certain dog-like tendencies.
In Russian with English subtitles.
RU FILM 60(DVD) On request