Animals know more than we used to think.
Griffin
D R
DR
D000819:Animal Communication; D000818:Animals; D001288:Attention / Q000502:physiology; D001921:Brain / Q000502:physiology; D002755:Choice Behavior / Q000502:physiology; D003071:Cognition / Q000502:physiology*; D006801:Humans; D008253:Macaca mulatta / Q000502:physiology / Q000523:psychology*; D008568:Memory / Q000502:physiology*; D009898:Optic Disk / Q000502:physiology; D011581:Psychological Tests