Abstract: A protective screen against aggressive animals, including a structure formed by frames provided with pointed elements which are installed for the purpose of creating secure zones that are protected against possible attacks from dangerous animals. A series of elemental modules having a square or rectangular tubular frame in polyethylene or hard plastic having four lances directed towards the centre but forming an angle “?” with the plane defined by the frame. Each lance has a shaft of the same material as the frame and a steel metal lance point that is protected against corrosion.