title: Colour vision in animals.
mesh_terms: D000818:Animals; D003118:Color Perception / Q000502:physiology*; D006801:Humans; D010786:Photoreceptor Cells / Q000502:physiology*; D013045:Species Specificity; D014714:Vertebrates / Q000502:physiology*; D014785:Vision, Ocular / Q000502:physiology