Animal Learning & Behavior

, Volume 12, Issue 4, pp 409–413 | Cite as

Discrimination of the number three by a raccoon (Procyon lotor)

  • Hank Davis


This paper reports the establishment of a discrimination based upon the number three in a male raccoon. Following a 6-month training period, the subject was able to select a clear Plexiglas cube containing 3 objects (grapes or small metal bells) from an array of cubes containing 1, 2, 3, 4, and 5 items. The results confirm previous reports of “intelligence” in the raccoon, and extend the number of species in which sensitivity to number has been demonstrated (see review by Davis & Memmott, 1982).


Journal ofComparative Discriminative Control Procyon Lotor Physiological Psychol Journal ofComparative Psychology 
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  1. Barash, D. P. (1974). Neighbor recognition in two “solitary” carnivores. The raccoon (Procyon lotor) and the red fox (Vulpes fulva).Science,185, 794–796PubMedCrossRefGoogle Scholar
  2. Bierens de Haan, J. A. (1932). Uber das Suchen nach serstecktem Futter bei einigen Procyoniden und einem Eichornchen.Zeitschrift fur Vergleichende Physiologie,17, 279–303.Google Scholar
  3. Breland, K., &Breland, M. (1961). The misbehavior of organisms.American Psychologist,16, 681–684CrossRefGoogle Scholar
  4. Cole, L. W. (1907). Concerning the intelligence of raccoons.Journal of Comparative Neurological Psychology,17, 211–261.CrossRefGoogle Scholar
  5. Davis, H. (1907). The raccoon: A study in animal intelligence.American Journal of Psychology,18, 441–489.CrossRefGoogle Scholar
  6. Davis, H., &Memmott, J. (1982). Counting behavior in animals A critical evaluation.Psychological Bulletin,92, 547–571.CrossRefGoogle Scholar
  7. Davis, H., &Memmott, J. (1983). Autocontingencies: Rats count to three to predict safety from shock.Animal Learning & Behavior,11, 95–100Google Scholar
  8. Fields, P. E. (1936) Studies in concept formation IV. A comparison of white rats and raccoons with respect to their visual discrimination of certain geometric figures.Journal of Comparative Psychology,21, 341–355.CrossRefGoogle Scholar
  9. Hicks, L. H. (1956). An analysis of number concept formation in the rhesus monkey.Journal of Comparative and Physiological Psychology,49, 212–218.PubMedCrossRefGoogle Scholar
  10. Johnson, J. I., &Michels, K. M. (1958). Discrimination of small intervals and objects by raccoons.Animal Behaviour,6, 164–170.CrossRefGoogle Scholar
  11. Munger, B. L., &Pubols, L. M. (1972). The sensorineural organization of the digital skin of the raccoon.Brain, Behavior & Evolution,5, 367–393.CrossRefGoogle Scholar
  12. Munn, N. L. (1930). Pattern and brightness discrimination in raccoons.Journal of Genetic Psychology,37, 3–34.Google Scholar
  13. Murphy, M. G., &O’Leary, J. L. (1973). Hanging and climbing functions in raccoon and sloth after total cerebellectomy.Archives of Neurology,28, 111–117PubMedGoogle Scholar
  14. Pubols, L. M., &Leroy, R. F. (1977). Orientation detectors m the primary somatosensory neocortex of the raccoon.Brain Research,129, 61–74.PubMedCrossRefGoogle Scholar
  15. Rabinowitz, A. R. (1981).The ecology of the raccoon (Procyon lotor)in Cades Cove, Great Smoky Mountain National Park. Unpublished doctoral dissertation, University of Tennessee.Google Scholar
  16. Seligman, M. E. P. (1970). On the generality of the laws of learning.Psychological Review,77, 406–418.CrossRefGoogle Scholar
  17. Shell, W. F., &Riopelle, A. J. (1957). Multiple discrimination learning in raccoons.Journal of Comparative and Physiological Psychology,50, 585–587.PubMedCrossRefGoogle Scholar
  18. von Glasersfeld, E. (1982). Subitizing: The role of figural patterns in the development of numerical concepts.Archives de Psychologie,50, 191–218.Google Scholar
  19. Warren, J. M., &Warren, H. B. (1962). Reversal learning by horse and raccoon.Journal of Genetic Psychology,100, 215–220.PubMedGoogle Scholar
  20. Watson, J. B. (1914).Behavior: An introduction to comparative psychology New York: Holt, Rinehart & Winston.CrossRefGoogle Scholar

Copyright information

© Psychonomic Society, Inc. 1984

Authors and Affiliations

  • Hank Davis
    • 1
  1. 1.Department of PsychologyUniversity of GuelphGuelphCanada

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