Out of Sight, Out of Mind or Just Something in the Way? Visual Barriers Do Not Reduce Intraspecific Agonism in an All-Male Group of Nile Crocodiles ().

Here, we evaluated if visual barriers could reduce intraspecific agonism in an all-male group of Nile crocodiles () living in a zoo. Crocodiles were monitored for nearly 100 h, and four "hotspots" of aggression within their exhibit were identified. Within these four locations, visual barriers were placed at the surface of the water with the goal of reducing agonism by targeting sight lines associated with their species-typical minimum exposure posture, where crocodiles submerge their body but maintain facial sensory organs above the water line.