1. Can cuttlefish learn by observing others?

   • Kuan-Ling Huang
   • Chuan-Chin Chiao

   Original Paper 26 October 2012 Pages: 313 - 320

   

2. Learning of an oddity rule by pigeons in a four-choice touch-screen procedure

   • Ulrike Aust
   • Michael M. Steurer

   Original Paper 31 October 2012 Pages: 321 - 341

   

3. Lateralized suckling in domestic horses (Equus caballus)

   • Martina Komárková
   • Jitka Bartošová

   Original Paper 02 November 2012 Pages: 343 - 349

   

4. Domestic dogs conceal auditory but not visual information from others

   • Juliane Bräuer
   • Magdalena Keckeisen
   • Michael Tomasello

   Original Paper 03 November 2012 Pages: 351 - 359

   

5. Do domestic dogs interpret pointing as a command?

   • Linda Scheider
   • Juliane Kaminski
   • Michael Tomasello

   Original Paper 09 November 2012 Pages: 361 - 372

   

6. Quantification abilities in angelfish (Pterophyllum scalare): the influence of continuous variables

   • Luis M. Gómez-Laplaza
   • Robert Gerlai

   Original Paper 17 November 2012 Pages: 373 - 383

   

7. Dogs steal in the dark

   • Juliane Kaminski
   • Andrea Pitsch
   • Michael Tomasello

   Original Paper 20 November 2012 Pages: 385 - 394

   

8. Different responses of two strains of chickens to different training procedures for magnetic directions

   • Susanne Denzau
   • Christine Nießner
   • Wolfgang Wiltschko

   Original Paper 23 November 2012 Pages: 395 - 403

   

9. Ontogeny of object permanence in a non-storing corvid species, the jackdaw (Corvus monedula)

   • Dorottya Júlia Ujfalussy
   • Ádám Miklósi
   • Thomas Bugnyar

   Original Paper 17 November 2012 Pages: 405 - 416

   

10. The psychophysics of sugar concentration discrimination and contrast evaluation in bumblebees

    • Vladislav Nachev
    • James D. Thomson
    • York Winter

    Original Paper Open access 22 November 2012 Pages: 417 - 427

    

11. Environmental enrichment affects suboptimal, risky, gambling-like choice by pigeons

    • Kristina F. Pattison
    • Jennifer R. Laude
    • Thomas R. Zentall

    Original Paper 07 December 2012 Pages: 429 - 434

    

12. Dogs’ attention towards humans depends on their relationship, not only on social familiarity

    • Lisa Horn
    • Friederike Range
    • Ludwig Huber

    Original Paper 06 December 2012 Pages: 435 - 443

    

13. Automated cognitive testing of monkeys in social groups yields results comparable to individual laboratory-based testing

    • Regina Paxton Gazes
    • Emily Kathryn Brown
    • Robert R. Hampton

    Original Paper 21 December 2012 Pages: 445 - 458

    

14. Social learning in captive African elephants (Loxodonta africana africana)

    • Brian J. Greco
    • Tracey K. Brown
    • Nancy G. Caine

    Original Paper 14 December 2012 Pages: 459 - 469

    

15. Use of gesture sequences in captive chimpanzee (Pan troglodytes) play

    • Maureen S. McCarthy
    • Mary Lee Abshire Jensvold
    • Deborah H. Fouts

    Original Paper 23 December 2012 Pages: 471 - 481

    

16. How to solve a mechanical problem: the relevance of visible and unobservable functionality for kea

    • Gy. K. Gajdon
    • T. M. Ortner
    • L. Huber

    Original Paper 27 December 2012 Pages: 483 - 492

    

17. Understanding of and reasoning about object–object relationships in long-tailed macaques?

    • Christian Schloegl
    • Michael R. Waldmann
    • Julia Fischer

    Original Paper Open access 17 February 2013 Pages: 493 - 507

    

18. Goal-oriented, flexible use of numerical operations by monkeys

    • Sumito Okuyama
    • Jun-ichi Iwata
    • Hajime Mushiake

    Original Paper 09 January 2013 Pages: 509 - 518

    

19. Baboons, like humans, solve analogy by categorical abstraction of relations

    • Timothy M. Flemming
    • Roger K. R. Thompson
    • Joël Fagot

    Short Communication 20 January 2013 Pages: 519 - 524

    

20. Independent appearance of an innovative feeding behaviour in Antillean bullfinches

    • S. Ducatez
    • J. N. Audet
    • L. Lefebvre

    Short Communication 14 February 2013 Pages: 525 - 529