"They do something worse than kill They multiply"
Its Alive III Island of the Alive

It's Alive Collection

It's Alive is a 1974 American horror film written, produced, and directed by Larry Cohen. In the film, a couple's infant child turns out to be a vicious mutant monster that kills when frightened. Notable talents involved in the movie were Bernard Herrmann who composed the score (noted for his work on many films of Alfred Hitchcock) and Rick Baker for makeup and puppet effects. The film was followed by two sequels, It Lives Again (1978) and It's Alive III: Island of the Alive (1987) and a remake, It's Alive (2008).