Discrimination of edge orientation by frogs.
D000818:Animals; D001001:Anura; D001522:Behavior, Animal; D004192:Discrimination, Psychological; D005556:Form Perception; D009039:Motion Perception; D009899:Optic Lobe, Nonmammalian / Q000502:physiology; D012160:Retina / Q000502:physiology*; D014796:Visual Perception