Natural history from the point of view of animal psychology, which explains habits, behavior and reactions as observed in laboratory and field investigation. Pretty fascinating stuff --that amateur as well as expert can digest and use as self starter for recognition and understanding. The doings of animals in relation to their senses -- instincts -- learning adaptation and memory; emotions -- social relationships and rankings; sex and courtship -- play -- parenthood -- competition, cooperation and response to stimuli. Studies -- successors to the famous ones of Pavlor's dogs -- have produced results the methods and means of proof of which are clearly outlined. There are parallels of beast to man, distinctions of abnormal from normal findings, results of bonflicts, all applying to possibilities of the realities of animal existence. Exploration in new fields, with the possibilities of the discoveries and widening knowledge indicated.