1. Primate errors in transitive ‘inference’: a two-tier learning model

   • Joanna J. Bryson
   • Jonathan C. S. Leong

   Original Article 30 June 2006 Pages: 1 - 15

   

2. Dogs recall their owner's face upon hearing the owner's voice

   • Ikuma Adachi
   • Hiroko Kuwahata
   • Kazuo Fujita

   Original Article 21 June 2006 Pages: 17 - 21

   

3. Audience effects on food caching in grey squirrels (Sciurus carolinensis): evidence for pilferage avoidance strategies

   • Lisa A. Leaver
   • Lucy Hopewell
   • Lesley Mallarky

   Original Article 21 June 2006 Pages: 23 - 27

   

4. Orientation in the cuttlefish Sepia officinalis: response versus place learning

   • Christelle Alves
   • Raymond Chichery
   • Ludovic Dickel

   Original Article 21 June 2006 Pages: 29 - 36

   

5. 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

   

6. How fish do geometry in large and in small spaces

   • Valeria Anna Sovrano
   • Angelo Bisazza
   • Giorgio Vallortigara

   Original Article 21 June 2006 Pages: 47 - 54

   

7. Now you see me, now you don't: evidence that chimpanzees understand the role of the eyes in attention

   • Autumn B. Hostetter
   • Jamie L. Russell
   • William D. Hopkins

   Original Article 18 July 2006 Pages: 55 - 62

   

8. Quantity discrimination in female mosquitofish

   • Christian Agrillo
   • Marco Dadda
   • Angelo Bisazza

   Original Article 26 July 2006 Pages: 63 - 70

   

9. Quantity-based judgments in the domestic dog (Canis lupus familiaris)

   • Camille Ward
   • Barbara B. Smuts

   Original Article 29 August 2006 Pages: 71 - 80