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Author Title Year Publication (up) Serial Volume Pages
Köhler, W. Intelligenzprüfungen an Menschenaffen 1921 5752
Previc, F.H. Thyroid hormone production in chimpanzees and humans: implications for the origins of human intelligence 2002 American Journal of Physical Anthropology 4108 118 402-3; discussion 404-5
Crockford, C.; Wittig, R.M.; Seyfarth, R.M.; Cheney, D.L. Baboons eavesdrop to deduce mating opportunities 2007 Animal Behaviour. 816 73 885-890
Cowley, J.J.; Griesel, R.D. The effect on growth and behaviour of rehabilitating first and second generation low protein rats 1966 Animal Behaviour. 4119 14 506-517
Huber, L.; Gajdon, G.K. Technical intelligence in animals: the kea model 2006 Animal Cognition 2085 9 295-305
Hunt, G.R.; Rutledge, R.B.; Gray, R.D. The right tool for the job: what strategies do wild New Caledonian crows use? 2006 Animal Cognition 2442 9 307-316
Mulcahy, N.J.; Call, J. How great apes perform on a modified trap-tube task 2006 Animal Cognition 2469 9 193-199
Santos, L.R.; Pearson, H.M.; Spaepen, G.M.; Tsao, F.; Hauser, M.D. Probing the limits of tool competence: experiments with two non-tool-using species (Cercopithecus aethiops and Saguinus oedipus) 2006 Animal Cognition 2478 9 94-109
Ducoing, A.M.; Thierry, B. Tool-use learning in Tonkean macaques (Macaca tonkeana) 2005 Animal Cognition 2508 8 103-113
Borsari, A.; Ottoni, E.B. Preliminary observations of tool use in captive hyacinth macaws (Anodorhynchus hyacinthinus) 2005 Animal Cognition 2518 8 48-52