1. An intentional vocalization draws others’ attention: A playback experiment with wild chimpanzees

   • Catherine Crockford
   • Roman M. Wittig
   • Klaus Zuberbühler

   Original Paper 24 December 2014 Pages: 581 - 591

   

2. Intraspecific variability in associative learning in the parasitic wasp Nasonia vitripennis

   • Mareike Koppik
   • Thomas S. Hoffmeister
   • Andra Thiel

   Original Paper 19 December 2014 Pages: 593 - 604

   

3. The use of proportion by young domestic chicks (Gallus gallus)

   • Rosa Rugani
   • Giorgio Vallortigara
   • Lucia Regolin

   Original Paper 25 December 2014 Pages: 605 - 616

   

4. Wild vervet monkeys copy alternative methods for opening an artificial fruit

   • Erica van de Waal
   • Nicolas Claidière
   • Andrew Whiten

   Original Paper 25 December 2014 Pages: 617 - 627

   

5. Local enhancement and social foraging in a non-social insular lizard

   • Ana Pérez-Cembranos
   • Valentín Pérez-Mellado

   Original Paper 21 December 2014 Pages: 629 - 637

   

6. Social referencing and cat–human communication

   • I. Merola
   • M. Lazzaroni
   • E. Prato-Previde

   Original Paper 09 January 2015 Pages: 639 - 648

   

7. No evidence for memory interference across sessions in food hoarding marsh tits Poecile palustris under laboratory conditions

   • A. Utku Urhan
   • Anders Brodin

   Original Paper 09 January 2015 Pages: 649 - 656

   

8. Social visual contact, a primary “drive” for social animals?

   • Audrey Perret
   • Laurence Henry
   • Isabelle George

   Original Paper 21 January 2015 Pages: 657 - 666

   

9. Information seeking in capuchins (Cebus apella): A rudimentary form of metacognition?

   • Alexander Q. Vining
   • Heidi L. Marsh

   Original Paper 15 January 2015 Pages: 667 - 681

   

10. Chimpanzees (Pan troglodytes) and human children (Homo sapiens) know when they are ignorant about the location of food

    • Karri Neldner
    • Emma Collier-Baker
    • Mark Nielsen

    Original Paper 14 January 2015 Pages: 683 - 699

    

11. High emotional reactivity toward an experimenter affects participation, but not performance, in cognitive tests with common marmosets (Callithrix jacchus)

    • Michèle N. Schubiger
    • Florian L. Wüstholz
    • Judith M. Burkart

    Original Paper 31 January 2015 Pages: 701 - 712

    

12. Giant pandas failed to show mirror self-recognition

    • Xiaozan Ma
    • Yuan Jin
    • Dingzhen Liu

    Original Paper 22 January 2015 Pages: 713 - 721

    

13. An automated controlled-rearing method for studying the origins of movement recognition in newly hatched chicks

    • Jason G. Goldman
    • Justin N. Wood

    Original Paper 11 February 2015 Pages: 723 - 731

    

14. Non-adjacent visual dependency learning in chimpanzees

    • Ruth Sonnweber
    • Andrea Ravignani
    • W. Tecumseh Fitch

    Original Paper Open access 21 January 2015 Pages: 733 - 745

    

15. Tufted capuchins (Cebus apella) adapt their communicative behaviour to human’s attentional states

    • Charlotte Defolie
    • Raphaëlle Malassis
    • Hélène Meunier

    Original Paper 29 January 2015 Pages: 747 - 755

    

16. Domestic pigs’ (Sus scrofa domestica) use of direct and indirect visual and auditory cues in an object choice task

    • Christian Nawroth
    • Eberhard von Borell

    Original Paper 04 February 2015 Pages: 757 - 766

    

17. Oxytocin enhances the appropriate use of human social cues by the domestic dog (Canis familiaris) in an object choice task

    • J. L. Oliva
    • J.-L. Rault
    • A. Lill

    Original Paper 03 February 2015 Pages: 767 - 775

    

18. Innovation and behavioral flexibility in wild redfronted lemurs (Eulemur rufifrons)

    • Franziska Huebner
    • Claudia Fichtel

    Original Paper Open access 12 February 2015 Pages: 777 - 787

    

19. Cognitive domains in the dog: independence of working memory from object learning, selective attention, and motor learning

    • Brian M. Zanghi
    • Joseph Araujo
    • Norton W. Milgram

    Original Paper 13 February 2015 Pages: 789 - 800

    

20. Meaning in animal and human communication

    • Thomas C. Scott-Phillips

    Short Communication 03 February 2015 Pages: 801 - 805