1. How chimpanzees (Pan troglodytes) perform in a modified emotional Stroop task

   • Matthias Allritz
   • Josep Call
   • Peter Borkenau

   Original Paper 27 November 2015 Pages: 435 - 449

   

2. Informed horses are influential in group movements, but they may avoid leading

   • Julie Andrieu
   • Séverine Henry
   • Bernard Thierry

   Original Paper 30 November 2015 Pages: 451 - 458

3. Variations in an African Grey parrot’s speech patterns following ignored and denied requests

   • Erin N. Colbert-White
   • Hannah C. Hall
   • Dorothy M. Fragaszy

   Original Paper 23 December 2015 Pages: 459 - 469

   

4. A reappraisal of successive negative contrast in two populations of domestic dogs

   • Stefanie Riemer
   • Sarah L. H. Ellis
   • Oliver H. P. Burman

   Original Paper Open access 07 January 2016 Pages: 471 - 481

   

5. Should I stay or should I go? Initiation of joint travel in mother–infant dyads of two chimpanzee communities in the wild

   • Marlen Fröhlich
   • Roman M. Wittig
   • Simone Pika

   Original Paper Open access 01 February 2016 Pages: 483 - 500

   

6. Emotional contagion of distress in young pigs is potentiated by previous exposure to the same stressor

   • Sébastien Goumon
   • Marek Špinka

   Original Paper 11 January 2016 Pages: 501 - 511

   

7. The effect of oxytocin on biological motion perception in dogs (Canis familiaris)

   • Krisztina Kovács
   • Anna Kis
   • József Topál

   Original Paper 07 January 2016 Pages: 513 - 522

   

8. Preference for and discrimination of videos of conspecific social behavior in mice

   • Shigeru Watanabe
   • Kazutaka Shinozuka
   • Takefumi Kikusui

   Original Paper 22 January 2016 Pages: 523 - 531

   

9. Tiger salamanders’ (Ambystoma tigrinum) response learning and usage of visual cues

   • Shannon M. A. Kundey
   • Roberto Millar
   • Chadbourne Allen

   Original Paper 21 January 2016 Pages: 533 - 541

   

10. Rescue of newborn ants by older Cataglyphis cursor adult workers

    • Elise Nowbahari
    • Céline Amirault
    • Karen L. Hollis

    Original Paper 04 February 2016 Pages: 543 - 553

    

11. Differing views: Can chimpanzees do Level 2 perspective-taking?

    • Katja Karg
    • Martin Schmelz
    • Michael Tomasello

    Original Paper Open access 06 February 2016 Pages: 555 - 564

    

12. Ontogenetic effects on gazing behaviour: a case study of kennel dogs (Labrador Retrievers) in the impossible task paradigm

    • Biagio D’Aniello
    • Anna Scandurra

    Original Paper 23 January 2016 Pages: 565 - 570

    

13. The effect of training and breed group on problem-solving behaviours in dogs

    • Sarah Marshall-Pescini
    • Chiara Frazzi
    • Paola Valsecchi

    Original Paper 10 February 2016 Pages: 571 - 579

    

14. Multiple cue use and integration in pigeons (Columba livia)

    • Eric L. G. Legge
    • Christopher R. Madan
    • Elliot A. Ludvig

    Original Paper 23 February 2016 Pages: 581 - 591

    

15. Memory systems in the rat: effects of reward probability, context, and congruency between working and reference memory

    • William A. Roberts
    • Nicole A. Guitar
    • Hayden MacDonald

    Original Paper 25 February 2016 Pages: 593 - 604

    

16. When and where to practice: social influences on the development of nut-cracking in bearded capuchins (Sapajus libidinosus)

    • Y. Eshchar
    • P. Izar
    • D. Fragaszy

    Original Paper 01 March 2016 Pages: 605 - 618

    

17. Reversal learning in gonadectomized marmosets with and without hormone replacement: are males more sensitive to punishment?

    • Matthew LaClair
    • Agnès Lacreuse

    Original Paper 24 February 2016 Pages: 619 - 630

    

18. Scaling reward value with demand curves versus preference tests

    • Lindsay P. Schwartz
    • Alan Silberberg
    • Stephen J. Suomi

    Original Paper 23 February 2016 Pages: 631 - 641

    

19. Phonological perception by birds: budgerigars can perceive lexical stress

    • Marisa Hoeschele
    • W. Tecumseh Fitch

    Original Paper Open access 25 February 2016 Pages: 643 - 654

    

20. Conserved evolutionary history for quick detection of threatening faces

    • Nobuyuki Kawai
    • Kenta Kubo
    • Sachiko Hayakawa

    Short Communication 29 December 2015 Pages: 655 - 660

    

21. Inhibition in Clark’s nutcrackers (Nucifraga columbiana): results of a detour-reaching test

    • A. Vernouillet
    • J. Anderson
    • D. M. Kelly

    Short Communication 22 January 2016 Pages: 661 - 665

    

22. ‘Goats that stare at men’—revisited: do dwarf goats alter their behaviour in response to eye visibility and head direction of a human?

    • Christian Nawroth
    • Eberhard von Borell
    • Jan Langbein

    Short Communication 28 January 2016 Pages: 667 - 672

    

23. Touchscreen assays of learning, response inhibition, and motivation in the marmoset (Callithrix jacchus)

    • Brian D. Kangas
    • Jack Bergman
    • Joseph T. Coyle

    Short Communication 03 February 2016 Pages: 673 - 677