Primate errors in transitive ‘inference’: a two-tier learning model Joanna J. BrysonJonathan C. S. Leong Original Article 30 June 2006 Pages: 1 - 15
Dogs recall their owner's face upon hearing the owner's voice Ikuma AdachiHiroko KuwahataKazuo Fujita Original Article 21 June 2006 Pages: 17 - 21
Audience effects on food caching in grey squirrels (Sciurus carolinensis): evidence for pilferage avoidance strategies Lisa A. LeaverLucy HopewellLesley Mallarky Original Article 21 June 2006 Pages: 23 - 27
Orientation in the cuttlefish Sepia officinalis: response versus place learning Christelle AlvesRaymond ChicheryLudovic Dickel Original Article 21 June 2006 Pages: 29 - 36
Rhesus monkeys (Macaca mulatta) succeed on a computerized test designed to assess conservation of discrete quantity Michael J. Beran Original Article 26 July 2006 Pages: 37 - 45
How fish do geometry in large and in small spaces Valeria Anna SovranoAngelo BisazzaGiorgio Vallortigara Original Article 21 June 2006 Pages: 47 - 54
Now you see me, now you don't: evidence that chimpanzees understand the role of the eyes in attention Autumn B. HostetterJamie L. RussellWilliam D. Hopkins Original Article 18 July 2006 Pages: 55 - 62
Quantity discrimination in female mosquitofish Christian AgrilloMarco DaddaAngelo Bisazza Original Article 26 July 2006 Pages: 63 - 70
Quantity-based judgments in the domestic dog (Canis lupus familiaris) Camille WardBarbara B. Smuts Original Article 29 August 2006 Pages: 71 - 80
