Use of number by fish.

BACKGROUND: Research on human infants, mammals, birds and fish has demonstrated that rudimentary numerical abilities pre-date the evolution of human language. Yet there is controversy as to whether animals represent numbers mentally or rather base their judgments on non-numerical perceptual variable...

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Bibliographic Details
Main Authors: Christian Agrillo, Marco Dadda, Giovanna Serena, Angelo Bisazza
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2009-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC2650784?pdf=render