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  Author Title Year (up) Publication Serial Volume Pages Links
Hopkins, W.D.; Taglialatela, J.P.; Leavens, D.A. Chimpanzees differentially produce novel vocalizations to capture the attention of a human 2007 Animal Behaviour. 2889 73 281-286 details   url
Meehan, C.L.; Mench, J.A. The challenge of challenge: Can problem solving opportunities enhance animal welfare? 2007 Applied Animal Behaviour Science 2890 102 246-261 details   url
Cantlon, J.F.; Brannon, E.M. How Much Does Number Matter to a Monkey (Macaca mulatta)? 2007 Journal of Experimental Psychology: Animal Behavior Processes 2891 33 32-41 details   url
Gifford, A.K.; Cloutier, S.; Newberry, R.C. Objects as enrichment: Effects of object exposure time and delay interval on object recognition memory of the domestic pig 2007 Applied Animal Behaviour Science 2892 107 206-217 details   doi
Mennecke, B.E.; Townsend, A.M.; Hayes, D.J.; Lonergan, S.M. A study of the factors that influence consumer attitudes toward beef products using the conjoint market analysis tool 2007 Journal of Animal Science 2944 jas.2006-495- details   url
Croney, C.C.; Millman, S.T. BOARD-INVITED REVIEW: The ethical and behavioral bases for farm animal welfare legislation 2007 Journal of Animal Science 2932 85 556-565 details   url
Penn, D.C.; Povinelli, D.J. Causal Cognition in Human and Nonhuman Animals: A Comparative, Critical Review 2007 Annual Review of Psychology 2974 58 97-118 details   doi
Bermú dez, J.&#233 Thinking Without Words: An Overview for Animal Ethics 2007 The Journal of Ethics 3399 11 319-335 details   doi
Allen, C.; Bekoff, M. Animal Minds, Cognitive Ethology, and Ethics 2007 The Journal of Ethics 3400 11 299-317 details   doi
Pain, S. Inner Representations and Signs in Animals 2007 Introduction to Biosemiotics 3102 409-455 details   doi
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