| 
Citations
 | 
   web
de Waal, F. B. (1999). The end of nature versus nurture. Sci Am, 281(6), 94–99.
toggle visibility
Gould, J. L. (2004). Animal cognition. Curr Biol, 14(10), R372–5.
toggle visibility
Pennisi, E. (1999). Are out primate cousins 'conscious'? (Vol. 284).
toggle visibility