1. Sequential responding to arabic numerals with wild cards by the chimpanzee (Pan troglodytes)

   • M. Tomonaga
   • T. Matsuzawa

   Original article Pages: 1 - 11

2. Use of human-given cues by domestic dogs (Canis familiaris) and horses (Equus caballus)

   • J. McKinley
   • T. D. Sambrook

   Original article Pages: 13 - 22

3. Cues that chimpanzees do and do not use to find hidden objects

   • J. Call
   • B. Agnetta
   • M. Tomasello

   Original article Pages: 23 - 34

4. Matching of numerical symbols with number of responses by pigeons

   • L. Xia
   • M. Siemann
   • J. D. Delius

   Original article Pages: 35 - 43

5. Early tutoring and adult reproductive behaviour in female domestic canary (Serinus canaria)

   • V. Depraz
   • G. Leboucher
   • M. Kreutzer

   Original article Pages: 45 - 51

6. Visual perception of biological motion in newly hatched chicks as revealed by an imprinting procedure

   • L. Regolin
   • L. Tommasi
   • G. Vallortigara

   Original article Pages: 53 - 60

7. Responses to mirror-image stimulation in jungle crows (Corvus macrorhynchos)

   • T. Kusayama
   • H. -J. Bischof
   • S. Watanabe

   Short communication Pages: 61 - 64