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Citations
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Pennisi, E. (2006). Animal cognition. Social animals prove their smarts (Vol. 312).
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Weir, A. A. S., Chappell, J., & Kacelnik, A. (2002). Shaping of hooks in New Caledonian crows. Science, 297(5583), 981.
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Pennisi, E. (1999). Are out primate cousins 'conscious'? (Vol. 284).
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Williams, N. (1997). Evolutionary psychologists look for roots of cognition (Vol. 275).
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Galdikas, B. M. (1989). Orangutan tool use. Science, 243(4888), 152.
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Heinrich, B., & Bugnyar, T. (2007). Just how smart are ravens? Sci Am, 296(4), 64–71.
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Straub, A. (2007). An intelligent crow beats a lab. Science, 316(5825), 688.
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Cowley, J. J., & Griesel, R. D. (1966). The effect on growth and behaviour of rehabilitating first and second generation low protein rats. Anim. Behav., 14(4), 506–517.
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Swartz, K. B. (1997). What is mirror self-recognition in nonhuman primates, and what is it not? Ann N Y Acad Sci, 818, 64–71.
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Cattell, R. B., & Korth, B. (1973). The isolation of temperament dimensions in dogs. Behav Biol, 9(1), 15–30.
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