Trivia

The film couldn't be shot in the old city centre of Rotterdam, where the story takes place, because almost all historical buildings were destroyed by a German bombardment in World War II.

Ruud Feltkamp's first film. He was only ten years old when he played the lead role.

It was the Netherlands' submission to the 73rd Academy Awards for the Academy Award for Best Foreign Language Film, but was not accepted as a nominee.

Based on the 1923 children's book of the same name by Chris Van Abkoude (also known as Charles Winters). A comic strip and a musical were also adapted from said book.

The dog's fur was dyed black to make it resemble the dog of the novel. 'Moor' is named after its black color.