| Author |
Title |
Year |
Publication  |
Serial |
Volume |
Pages |
| Galdikas, B.M. |
Orangutan tool use |
1989 |
Science (New York, N.Y.) |
2847 |
243 |
152 |
| Straub, A. |
An intelligent crow beats a lab |
2007 |
Science (New York, N.Y.) |
4102 |
316 |
688 |
| de Waal, F.B.M. |
How animals do business |
2005 |
Scientific American |
166 |
292 |
54-61 |
| Whiten, A.; Boesch, C. |
The cultures of chimpanzees |
2001 |
Scientific American |
740 |
284 |
60-67 |
| Van Schaik, C. |
Why are some animals so smart? |
2006 |
Scientific American |
2830 |
294 |
64-71 |
| Heinrich, B.; Bugnyar, T. |
Just how smart are ravens? |
2007 |
Scientific American |
4101 |
296 |
64-71 |
| Flack, J.C.; de Waal, F.B.M.; Krakauer, D.C. |
Social structure, robustness, and policing cost in a cognitively sophisticated species |
2005 |
The American Naturalist |
168 |
165 |
E126-139 |
| Houpt, K.A. |
Animal behavior as a subject for veterinary students |
1976 |
The Cornell veterinarian |
61 |
66 |
73-81 |
| Zentall, T.R. |
A cognitive behaviorist approach to the study of animal behavior |
2002 |
The Journal of general psychology |
214 |
129 |
328-363 |
| Houpt, K.A. |
Stable vices and trailer problems |
1986 |
The Veterinary clinics of North America. Equine practice |
48 |
2 |
623-633 |
