Deadlier Than the Male intrigue when he comes to visit. The title is a reference to the 1911 Rudyard Kipling poem "The Female of the Species," which includes the line, "The female of the species must be deadlier than the male", and also refers to Sapper's earlier Drummond book, "The Female of the Species". The working title of the film was "The Female of the Species". "Deadlier Than the Male", the song featured in the film`s opening credit sequence, was performed by the Walker Brothers. Filmed in Technicolor and Techniscope, portions of the film were shot in Lerici, La Spezia, Liguria, Italy. A sequel,
Female infanticide in India dowry system, the practice persists, and for poorer families in rural regions female infanticide and gender selective abortion is attributed to the fear of being unable to raise a suitable dowry and then being socially ostracised. Other major reasons given for infanticide, both female and male, include unwanted children, such as those conceived after rape, deformed children born to impoverished families, and those born to unmarried mothers lacking reliable, safe and affordable birth control. Relationship difficulties, low income, lack of support coupled with mental illness such as postpartum depression have also been reported as reasons for female infanticide in India.