1. Getting rid of blinkers: the case of mirror self-recognition in horses (Equus caballus)

   • Chiara Scopa
   • Veronica Maglieri
   • Elisabetta Palagi

   Commentary 15 June 2022 Pages: 711 - 716

2. Perceptual grouping and detection of trial-unique emergent structures by pigeons

   • Daniel I. Brooks
   • Robert G. Cook
   • Kazuhiro Goto

   Original Paper 14 January 2022 Pages: 717 - 729

   

3. Flexibility and rigidity in hunting behaviour in rodents: is there room for cognition?

   • Zhanna Reznikova
   • Sofia Panteleeva
   • Yuri Litvinov

   Original Paper 07 January 2022 Pages: 731 - 743

   

4. Bold and bright: shy and supple? The effect of habitat type on personality–cognition covariance in the Aegean wall lizard (Podarcis erhardii)

   • Gilles De Meester
   • Panayiotis Pafilis
   • Raoul Van Damme

   Original Paper 17 January 2022 Pages: 745 - 767

   

5. Individuality, species-specific features, and female discrimination of male southern white rhinoceros courtship calls

   • Ivana Cinková
   • Adrian M. Shrader

   Original Paper 11 January 2022 Pages: 769 - 782

   

6. Mirror self-recognition in gorillas (Gorilla gorilla gorilla): a review and evaluation of mark test replications and variants

   • Lindsay E. Murray
   • James R. Anderson
   • Gordon G. Gallup Jr

   Original Paper Open access 07 January 2022 Pages: 783 - 792

   

7. Digital embryos: a novel technical approach to investigate perceptual categorization in pigeons (Columba livia) using machine learning

   • Roland Pusch
   • Julian Packheiser
   • Onur Güntürkün

   Original Article Open access 06 January 2022 Pages: 793 - 805

   

8. Chimpanzees (Pan troglodytes) detect strange body parts: an eye-tracking study

   • Jie Gao
   • Ikuma Adachi
   • Masaki Tomonaga

   Original Paper Open access 28 January 2022 Pages: 807 - 819

   

9. Disentangling help-seeking and giving up: differential human-directed gazing by dogs in a modified unsolvable task paradigm

   • Annina Hirschi
   • Alja Mazzini
   • Stefanie Riemer

   Original Paper Open access 12 January 2022 Pages: 821 - 836

   

10. A promising novel judgement bias test to evaluate affective states in dogs (Canis familiaris)

    • Carlotta Burani
    • Annalisa Pelosi
    • Paola Valsecchi

    Original Paper 04 January 2022 Pages: 837 - 852

    

11. An intentional cohesion call in male chimpanzees of Budongo Forest

    • Alice Bouchard
    • Klaus Zuberbühler

    Original Paper Open access 19 January 2022 Pages: 853 - 866

    

12. Variation in inhibitory control does not influence social rank, foraging efficiency, or risk taking, in red junglefowl females

    • Laura Clare Garnham
    • Robert Boddington
    • Hanne Løvlie

    Original Paper Open access 04 February 2022 Pages: 867 - 879

    

13. Disturbance cues function as a background risk cue but not as an associative learning cue in tadpoles

    • Ita A. E. Rivera-Hernández
    • Adam L. Crane
    • Maud C. O. Ferrari

    Original Paper 31 January 2022 Pages: 881 - 889

    

14. Where to sleep next? Evidence for spatial memory associated with sleeping sites in Skywalker gibbons (Hoolock tianxing)

    • Hanlan Fei
    • Miguel de Guinea
    • Pengfei Fan

    Original Paper 31 January 2022 Pages: 891 - 903

    

15. The acoustic bases of human voice identity processing in dogs

    • Anna Gábor
    • Noémi Kaszás
    • Attila Andics

    Original Paper Open access 10 February 2022 Pages: 905 - 916

    

16. Zebrafish excel in number discrimination under an operant conditioning paradigm

    • Angelo Bisazza
    • Maria Santacà

    Original Article Open access 18 February 2022 Pages: 917 - 933

    

17. A new protocol for investigating visual two-choice discrimination learning in lizards

    • Birgit Szabo
    • Martin J. Whiting

    Original Paper Open access 06 February 2022 Pages: 935 - 950

    

18. Detecting surface changes in a familiar tune: exploring pitch, tempo and timbre

    • Paola Crespo-Bojorque
    • Alexandre Celma-Miralles
    • Juan M. Toro

    Original Paper Open access 09 February 2022 Pages: 951 - 960

    

19. Testing use of the first multi-partner cognitive enrichment devices by a group of male bottlenose dolphins

    • Eszter Matrai
    • Shaw Ting Kwok
    • Ákos Pogány

    Original Paper 11 February 2022 Pages: 961 - 973

    

20. Cognitive bias in animal behavior science: a philosophical perspective

    • Behzad Nematipour
    • Marko Bračić
    • Ulrich Krohs

    Original Paper Open access 04 July 2022 Pages: 975 - 990

    

21. Nest sanitation as an effective defence against brood parasitism

    • Michal Šulc
    • Anna E. Hughes
    • Václav Jelínek

    Original Paper 01 July 2022 Pages: 991 - 1002

    

22. Sexual differences in responses of meadow voles to environmental cues in the presence of mink odor

    • David M. Midlick
    • Sarah S. Garris
    • Michael H. Ferkin

    Original Article 21 February 2022 Pages: 1003 - 1011

    

23. Correction to: If horses had toes: demonstrating mirror self recognition at group level in Equus caballus

    • Paolo Baragli
    • Chiara Scopa
    • Elisabetta Palagi

    Correction Open access 30 June 2022 Pages: 1013 - 1014