1. Comparing supervised learning methods for classifying sex, age, context and individual Mudi dogs from barking

   • Ana Larrañaga
   • Concha Bielza
   • Pedro Larrañaga

   Original Paper 12 October 2014 Pages: 405 - 421

   

2. Contextual correlates of syntactic variation in mountain and western gorilla close-distance vocalizations: Indications for lexical or phonological syntax?

   • Daniela Hedwig
   • Roger Mundry
   • Christophe Boesch

   Original Paper 14 October 2014 Pages: 423 - 435

   

3. From colour photographs to black-and-white line drawings: an assessment of chimpanzees’ (Pan troglodytes’) transfer behaviour

   • James Close
   • Josep Call

   Original Paper 18 October 2014 Pages: 437 - 449

   

4. Do Tonkean macaques (Macaca tonkeana) tailor their gestural and visual signals to fit the attentional states of a human partner?

   • Charlotte Canteloup
   • Dalila Bovet
   • Hélène Meunier

   Original Paper 14 October 2014 Pages: 451 - 461

   

5. Something worth remembering: visual discrimination in sharks

   • Theodora Fuss
   • Vera Schluessel

   Original Paper 31 October 2014 Pages: 463 - 471

   

6. Erratum to: Something worth remembering: visual discrimination in sharks

   • Theodora Fuss
   • Vera Schluessel

   Erratum 17 December 2014 Pages: 473 - 474

   

7. Do dogs follow behavioral cues from an unreliable human?

   • Akiko Takaoka
   • Tomomi Maeda
   • Kazuo Fujita

   Original Paper 28 October 2014 Pages: 475 - 483

   

8. Problem-solving and learning in Carib grackles: individuals show a consistent speed–accuracy trade-off

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

   Original Paper 09 November 2014 Pages: 485 - 496

   

9. Irrespective of size, scales, color or body shape, all fish are just fish: object categorization in the gray bamboo shark Chiloscyllium griseum

   • V. Schluessel
   • D. Duengen

   Original Paper 11 November 2014 Pages: 497 - 507

   

10. Solving a novel confinement problem by spartaeine salticids that are predisposed to solve problems in the context of predation

    • Fiona R. Cross
    • Robert R. Jackson

    Original Paper 13 November 2014 Pages: 509 - 515

    

11. Emotions on the loose: emotional contagion and the role of oxytocin in pigs

    • Inonge Reimert
    • J. Elizabeth Bolhuis
    • T. Bas Rodenburg

    Original Paper Open access 11 November 2014 Pages: 517 - 532

    

12. The Ebbinghaus illusion in a fish (Xenotoca eiseni)

    • Valeria Anna Sovrano
    • Liliana Albertazzi
    • Orsola Rosa Salva

    Original Paper 21 November 2014 Pages: 533 - 542

    

13. Can bottlenose dolphins (Tursiops truncatus) cooperate when solving a novel task?

    • Stan A. Kuczaj II
    • Kelley A. Winship
    • Holli C. Eskelinen

    Original Paper 20 November 2014 Pages: 543 - 550

    

14. Why do seals have cones? Behavioural evidence for colour-blindness in harbour seals

    • Christine Scholtyssek
    • Almut Kelber
    • Guido Dehnhardt

    Original Paper Open access 02 December 2014 Pages: 551 - 560

    

15. Decision-making under risk and ambiguity in low-birth-weight pigs

    • Eimear Murphy
    • Lynn Kraak
    • Franz Josef van der Staay

    Original Paper 20 December 2014 Pages: 561 - 572

    

16. Social preferences influence the short-term exchange of social grooming among male bonobos

    • Martin Surbeck
    • Gottfried Hohmann

    Original Paper 18 December 2014 Pages: 573 - 579