1. Investigation of cognitive mechanisms and strategy on solving multiple string-pulling problems in Azure-winged magpie (Cyanopica cyanus)

   • Lin Wang
   • Dujing Zhang
   • Jinling Sui

   Original Paper 07 July 2020 Pages: 1 - 10

   

2. Reducing impulsive choice VII: effects of duration of delay-exposure training

   • C. Renee Renda
   • Jillian M. Rung
   • Gregory J. Madden

   Original Paper 08 July 2020 Pages: 11 - 21

   

3. Neurally underdeveloped cuttlefish newborns exhibit social learning

   • Eduardo Sampaio
   • Catarina S. Ramos
   • Rui Rosa

   Original Paper 10 July 2020 Pages: 23 - 32

   

4. Who turns to the human? Companion pigs’ and dogs’ behaviour in the unsolvable task paradigm

   • Paula Pérez Fraga
   • Linda Gerencsér
   • Attila Andics

   Original Paper Open access 17 July 2020 Pages: 33 - 40

   

5. Taste association capabilities differ in high- and low-yawning rats versus outbred Sprague–Dawley rats after prolonged sugar consumption

   • María-Isabel Miranda
   • Alejandro Rangel-Hernández
   • Jose R. Eguibar

   Original Paper 17 July 2020 Pages: 41 - 52

   

6. More exploratory house mice judge an ambiguous situation more negatively

   • Aurélie Verjat
   • Paul Devienne
   • Christophe Féron

   Original Paper 22 July 2020 Pages: 53 - 64

   

7. Dogs and cats prioritize human action: choosing a now-empty instead of a still-baited container

   • Hitomi Chijiiwa
   • Saho Takagi
   • Kazuo Fujita

   Original Paper 23 July 2020 Pages: 65 - 73

   

8. Training differences predict dogs' (Canis lupus familiaris) preferences for prosocial others

   • Zachary A. Silver
   • Ellen E. Furlong
   • Laurie R. Santos

   Original Paper 05 August 2020 Pages: 75 - 83

   

9. The functional equivalence of two variants of the suboptimal choice task: choice proportion and response latency as measures of value

   • Alejandro Macías
   • Valeria V. González
   • Marco Vasconcelos

   Original Paper 08 August 2020 Pages: 85 - 98

   

10. Relative importance of senses in forage discrimination by cattle depends on the sensory contrast between the discrimination targets: a preliminary study

    • Masahiko Hirata
    • Noriko Kusatake

    Original Paper 10 August 2020 Pages: 99 - 106

    

11. Partial rewarding during clicker training does not improve naïve dogs’ learning speed and induces a pessimistic-like affective state

    • Giulia Cimarelli
    • Julia Schoesswender
    • Zsófia Virányi

    Original Paper Open access 08 September 2020 Pages: 107 - 119

    

12. Did we find a copycat? Do as I Do in a domestic cat (Felis catus)

    • Claudia Fugazza
    • Andrea Sommese
    • Ádám Miklósi

    Original Paper Open access 18 September 2020 Pages: 121 - 131

    

13. Volumetric spatial behaviour in rats reveals the anisotropic organisation of navigation

    • Selim Jedidi-Ayoub
    • Karyna Mishchanchuk
    • Roddy M. Grieves

    Original Paper Open access 21 September 2020 Pages: 133 - 163

    

14. Neophobia and social facilitation in narrow-striped mongooses

    • Bako N. Rasolofoniaina
    • Peter M. Kappeler
    • Claudia Fichtel

    Original Paper Open access 21 September 2020 Pages: 165 - 175

    

15. New Caledonian crows' basic tool procurement is guided by heuristics, not matching or tracking probe site characteristics

    • Gavin R. Hunt

    Original Paper 23 September 2020 Pages: 177 - 191

    

16. Can you hear me now? The effect of signal degradation on perceived predator threat in black-capped chickadees (Poecile atricapillus)

    • Jenna V. Congdon
    • Allison H. Hahn
    • Christopher B. Sturdy

    Original Paper 26 September 2020 Pages: 193 - 204

    

17. Sex differences in the use of spatial cues in two avian brood parasites

    • Jimena Lois-Milevicich
    • Alex Kacelnik
    • Juan Carlos Reboreda

    Original Paper 27 September 2020 Pages: 205 - 212

    

18. Wild great tits’ alarm calls prompt vigilant behaviours in free-range chickens

    • Mylène Dutour
    • Samara Danel

    Short Communication 09 October 2020 Pages: 213 - 216