 | Abdulla, S. 2000. Rewarding experience. Nature 638: 1. |
| Agnetta, B., Hare, B., Tomasello, M. 2000. Cues to food location that domestic dogs (Canis familiaris) of different ages do and do not use. Animal Cognition 3: 107-112. |
 | Aragón, P., López, P., Martín, J. 2000. Size-dependent chemosensory responses to familiar and unfamiliar conspecific faecal pellets by the iberian rock-lizard, Lacerta monticola. Ethology 106: 1115-1128. |
 | Arnold, K. E. 2000. Kin recognition in rainbowfish (Melanotaenia eachamensis): sex, sibs and shoaling. Behavioral Ecology and Sociobiology 48: 385-391. |
| Arrese, C., Archer, M., Runham, P., Dunlop, S. A., Beazley, L. D. 2000. Visual system in a diurnal marsupial, the numbat (Myrmecobius fasciatus): retinal organization, visual acuity and visual fields. Brain Behavior and Evolution 55: 163-175. |
 | Aubin, T., Jouventin, P., Hildebrand, C. 2000. Penguins use the two–voice system to recognize each other. Proceedings of the Royal Society of London. Series B: Biological Sciences 267: 1081-1087. |
| Baack, J. K., Switzer, P. V. 2000. Alarm calls affect foraging behavior in eastern chipmunks (Tamias striatus, rodentia: Sciuridae). Ethology 106: 1057-1066. |
 | Backwell, P. R. Y., Christy, J. H., Telford, S. R., Jennions, M. D., Passmore, J. 2000. Dishonest signalling in a fiddler crab. Proceedings of the Royal Society of London. Series B: Biological Sciences 267: 719-724. |
| Baker, K. C., Aureli, F. 2000. Coping with conflict during initial encounters in chimpanzees. Ethology 106: 527-541. |
| Barber, I., Ruxton, G. D. 2000. The importance of stable schooling: do familiar sticklebacks stick together?. Proceedings of the Royal Society of London. Series B: Biological Sciences 267: 151-155. |
 | Beckers, G. J. L., Bolhuis, J. J. 2000. The design of animal communication. Animal Behaviour 60: 703-704. |
 | Bee, M. A., Schachtman, T. R. 2000. Is habituation a mechanism for neighbor recognition in green frogs?. Behavioral Ecology and Sociobiology 48: 165-168. |
| Beecher, M. D., Campbell, S. E., Burt, J. M., Hill, C. E., Nordby, J. C. 2000. Song-type matching between neighbouring song sparrows. Animal Behaviour 59: 21-27. |
| Behaviour, A. 2000. Guidelines for the treatment of animals in behavioural research and teaching. Animal Behaviour 59: 253-257. |
| Ben-Shahar, Y., Thompson, C. K., Hartz, S. M., Smith, B. H., Robinson, G. E. 2000. Differences in performance on a reversal learning test and division of labor in honey bee colonies. Animal Cognition 3: 119-125. |
| Beran, M. J., Pate, J. L., Richardson, W. K., Rumbaugh, D. M. 2000. A chimpanzee’s (Pan troglodytes) long-term retention of lexigrams. Animal Learning & Behavior 28: 201-207. |
| Bercovitch, F. B. 2000. Comparative primate socioecology. Animal Behaviour 59: 659-661. |
| Biegler, R. 2000. Possible uses of path integration in animal navigation. Animal Learning & Behavior 28: 257-277. |
| Björnsdotter, M., Larsson, L., Ljungberg, T. 2000. Post-conflict affiliation in two captive groups of black-and-white guereza Colobus guereza. Ethology 106: 289-300. |
| Boatright-Horowitz, S. L., Horowitz, S. S., Simmons, A. M. 2000. Patterns of vocal interactions in a bullfrog (Rana catesbeiana) chorus: Preferential responding to far neighbors. Ethology 106: 701-712. |