Thinking about thinking: how Donald R. Griffin (1915–2003) remade animal behavior James L. Gould Obituary 19 December 2003 Pages: 1 - 4
New evidence of animal consciousness Donald R. GriffinGayle B. Speck Review 05 December 2003 Pages: 5 - 18
Tufted capuchins (Cebus apella) attribute value to foods and tools during voluntary exchanges with humans Gregory C. WestergaardChanya LivStephen J. Suomi Original Article 19 July 2003 Pages: 19 - 24
How do rhesus monkeys (Macaca mulatta) scan faces in a visual paired comparison task? Katalin M. GothardCynthia A. EricksonDavid G. Amaral Original Article 09 July 2003 Pages: 25 - 36
Western scrub-jays (Aphelocoma californica) use cognitive strategies to protect their caches from thieving conspecifics Nathan J. EmeryJoanna M. DallyNicola S. Clayton Original Article 26 June 2003 Pages: 37 - 43
Reciprocal recognition of sifaka (Propithecus verreauxi verreauxi) and redfronted lemur (Eulemur fulvus rufus) alarm calls Claudia Fichtel Original Article 26 June 2003 Pages: 45 - 52
Representation of two geometric features of the environment in the domestic chick (Gallus gallus) Luca TommasiCamilla Polli Original Article 23 July 2003 Pages: 53 - 59
Oddity learning by African dwarf goats ( Capra hircus) Evgeny RoitbergHartmut Franz Original Article 10 September 2003 Pages: 61 - 67
