No abstract available
Publication types
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Research Support, U.S. Gov't, Non-P.H.S.
MeSH terms
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Animals
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Caniformia / physiology*
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Discrimination, Psychological
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Female
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Male
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Photometry
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Reinforcement, Psychology
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Seals, Earless / physiology*
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Size Perception / physiology*
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Visual Acuity*