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Acta Zoologica Fennica basic training behaviour bit of sausage bitches Bjiirn Kurten blue cue blue set breed choice of dish cocker spaniel colour discrimination experiments commenced complete series consisting of grey correct choice Crossbred cue was replaced cues were given darkest different brightness dishes were ranged experiments the dogs FAUNA ET FLORA female dogs Finnischen floor FLORA FENNICA Foxterrier Francken given as cues Graber green and yellow green set Gregg grey dishes grey set Helsingfors HELSINKI Joker light blue light green male dog mixed set number of trials number of wrong obtained by mixing olfactory sense painted Poodle puppies red cue red dish RED FOX regarded as completed rubbed with sausage running series series of trials set of dishes Six series SOCIETAS PRO FAUNA sometimes Spred-Satin standard cue standard-red dish tests trained to respond training was regarded training with blue twilight vision wash-bear wrong choices yellow set