After a couple of under performing movies (by Jean-Paul Belmondo's high standards anyway), he returns with this movie which was the fifth highest grossing movie of its year in France.
There is a scene with a Tiger in this movie which looks harmless, but landed Belmondo in the Hospital for quite some time.
This was Raquel Welch's final theatrical movie until Y a-t-il un flic pour sauver Hollywood ? (1994).
According to the credits, Julien Guiomar played "Fechner". Christian Fechner was the producer of this movie.
During the wrestling scene with the tiger, Belmondo get a tooth of the playful beast enter his temple's skin by accident resulting in an infection in the ear.