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Weatherly, J. N., Arthur, E. I. L., & Tischart, L. M. (2003). Altering “motivational” variables alters induction produced by upcoming food-pellet reinforcement. Anim. Cogn., 6(1), 17–26.
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Wasilewski, A. (2003). “Freundschaft” bei Huftieren? – Soziopositive Beziehungen zwischen nicht-verwandten artgleichen Herdenmitgliedern. Doctoral thesis, , .
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Wasilewski A. (2003). 'Friendship' in ungulates? – Sociopositive relationships between non-related herd members of the same species. Ph.D. thesis, University of Marburg, Marburg.
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Washburn, D. A., & Astur, R. S. (2003). Exploration of virtual mazes by rhesus monkeys (Macaca mulatta). Anim. Cogn., 6(3), 161–168.
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Waring, G. H. (2003). Horse behavior. Norwich, N.Y.: Noyes Publishing.
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Waring, G. H. (2003).
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Wallner, B., Brem, G., Muller, M., & Achmann, R. (2003). Fixed nucleotide differences on the Y chromosome indicate clear divergence between Equus przewalskii and Equus caballus. Anim Genet, 34(6), 453–456.
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Wallin, L., Strandberg, E., & Philipsson, J. (2003). Genetic correlations between field test results of Swedish Warmblood Riding Horses as 4-year-olds and lifetime performance results in dressage and show jumping. Livestock Production Science, 82(1), 61–71.
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Waeber P.O., & Hemelrijk C.K. (2003). Female Dominance and Social Structure in Alaotran Gentle Lemurs. Behaviour, 140(10), 1235–1246.
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Vonk, J. (2003). Gorilla ( Gorilla gorilla gorilla) and orangutan ( Pongo abelii) understanding of first- and second-order relations. Anim. Cogn., 6(2), 77–86.
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