1. The use of a human’s location and social cues by Asian elephants in an object-choice task

   • Oraya Ketchaisri
   • Chomcheun Siripunkaw
   • Joshua M. Plotnik

   Original Paper 19 June 2019 Pages: 907 - 915

   

2. Comparing interspecific socio-communicative skills of socialized juvenile dogs and miniature pigs

   • Linda Gerencsér
   • Paula Pérez Fraga
   • Attila Andics

   Original Paper Open access 29 June 2019 Pages: 917 - 929

   

3. Motoric self-regulation by sled dogs and pet dogs and the acute effect of carbohydrate source in sled dogs

   • Debbie M. Kelly
   • Jennifer L. Adolphe
   • Adronie Verbrugghe

   Original Paper 29 June 2019 Pages: 931 - 946

   

4. Memory for own behaviour in pinnipeds

   • Simeon Quirinus Smeele
   • Kirstin Anderson Hansen
   • Magnus Wahlberg

   Original Paper 25 June 2019 Pages: 947 - 958

   

5. Effects of early and later life environmental enrichment and personality on attention bias in pigs (Sus scrofa domesticus)

   • Lu Luo
   • Inonge Reimert
   • J. Elizabeth Bolhuis

   Original Paper Open access 27 June 2019 Pages: 959 - 972

   

6. Perception of Ebbinghaus–Titchener stimuli in starlings (Sturnus vulgaris)

   • Muhammad A. J. Qadri
   • Robert G. Cook

   Original Paper 18 July 2019 Pages: 973 - 989

   

7. Vocal behaviour of allied male dolphins during cooperative mate guarding

   • Stephanie L. King
   • Simon J. Allen
   • Richard C. Connor

   Original Paper Open access 17 July 2019 Pages: 991 - 1000

   

8. Effects of size and personality on social learning and human-directed behaviour in horses (Equus caballus)

   • Josefine Henriksson
   • Mathilde Sauveroche
   • Lina S. V. Roth

   Original Paper Open access 16 July 2019 Pages: 1001 - 1011

   

9. Differing effects of familiarity/kinship in the social transmission of fear associations and food preferences in rats

   • Laura A. Agee
   • Carolyn E. Jones
   • Marie-H. Monfils

   Original Paper 16 July 2019 Pages: 1013 - 1026

   

10. Pair foraging degrades socially transmitted food preferences in rats

    • Chelsey C. Damphousse
    • Diano F. Marrone
    • Noam Miller

    Original Paper 23 July 2019 Pages: 1027 - 1037

    

11. Ecological differences in the facultative Caribbean cleaning goby Elacatinus prochilos do not predict learning performance in discriminatory two-choice tasks

    • Renata Mazzei
    • Michelle Lampe
    • Redouan Bshary

    Original Paper 31 July 2019 Pages: 1039 - 1050

    

12. Zebrafish (Danio rerio) behavioral laterality predicts increased short-term avoidance memory but not stress-reactivity responses

    • Barbara D. Fontana
    • Madeleine Cleal
    • Matthew O. Parker

    Original Paper Open access 24 July 2019 Pages: 1051 - 1061

    

13. Testing dogs in ape-like conditions: the effect of a barrier on dogs’ performance on the object-choice task

    • Hannah Clark
    • David A. Leavens

    Original Paper Open access 25 July 2019 Pages: 1063 - 1072

    

14. A wolfdog point of view on the impossible task paradigm

    • Andrea Sommese
    • Kamila Nováková
    • Luděk Bartoš

    Original Paper 05 August 2019 Pages: 1073 - 1083

    

15. Female cognitive performance and mass are correlated with different aspects of mate choice in the zebra finch (Taeniopygia guttata)

    • C. Howell
    • R. Anderson
    • E. P. Derryberry

    Original Paper 10 August 2019 Pages: 1085 - 1094

    

16. The role of associative learning process on the response of fledgling great tits (Parus major) to mobbing calls

    • Mylène Dutour
    • Jean-Paul Léna
    • Thierry Lengagne

    Original Paper 17 August 2019 Pages: 1095 - 1103

    

17. Unpredictable environments enhance inhibitory control in pheasants

    • Jayden O. van Horik
    • Christine E. Beardsworth
    • Joah R. Madden

    Original Paper Open access 30 August 2019 Pages: 1105 - 1114

    

18. Acoustic structure of forest elephant rumbles: a test of the ambiguity reduction hypothesis

    • Daniela Hedwig
    • Anahita K. Verahrami
    • Peter H. Wrege

    Original Paper 18 September 2019 Pages: 1115 - 1128

    

19. The effects of human attentional state on canine gazing behaviour: a comparison of free-ranging, shelter, and pet dogs

    • Lauren Brubaker
    • Debottam Bhattacharjee
    • Monique A. R. Udell

    Original Paper 07 September 2019 Pages: 1129 - 1139

    

20. When are egg-rejection cues perceived? A test using thermochromic eggs in an avian brood parasite host

    • Mark E. Hauber
    • Miri Dainson
    • Daniel Hanley

    Original Paper 12 September 2019 Pages: 1141 - 1148

    

21. Heterospecific alarm-call recognition in two warbler hosts of common cuckoos

    • Jiangping Yu
    • Hailin Lu
    • Anders Pape Møller

    Original Paper Open access 10 September 2019 Pages: 1149 - 1157

    

22. Mandrills represent their own dominance hierarchy on a cardinal, not ordinal, scale

    • Gabriele Schino
    • Francesca Lasio

    Original Paper 17 September 2019 Pages: 1159 - 1169

    

23. Mirror self-recognition and its relationship to social cognition in chimpanzees

    • Carla Krachun
    • Robert Lurz
    • William D. Hopkins

    Original Paper 21 September 2019 Pages: 1171 - 1183

    

24. User innovation: a novel framework for studying animal innovation within a comparative context

    • Lydia M. Hopper
    • Andrew W. Torrance

    Short Communication 04 September 2019 Pages: 1185 - 1190

25. Are brain weights estimated from scaling relationships suitable for comparative studies of animal cognition?

    • Stephen H. Montgomery

    Commentary 21 August 2019 Pages: 1191 - 1195

26. Leveraging brain–body scaling relationships for comparative studies

    • Daniel J. Horschler
    • Evan L. MacLean

    Commentary 11 October 2019 Pages: 1197 - 1202