1. Environmental influences on development of executive functions in dogs

   • Maike Foraita
   • Tiffani Howell
   • Pauleen Bennett

   Review 21 February 2021 Pages: 655 - 675

   

2. Parental favoritism in a wild bird population

   • Madison Brode
   • Kelly D. Miller
   • E. Keith Bowers

   Original Paper 05 January 2021 Pages: 677 - 687

   

3. Territorial calls of the bat Hipposideros armiger may encode multiple types of information: body mass, dominance rank and individual identity

   • Congnan Sun
   • Chunmian Zhang
   • Tinglei Jiang

   Original Article 06 January 2021 Pages: 689 - 702

   

4. Do alternative reproductive tactics predict problem-solving performance in African striped mice?

   • Celine Rochais
   • Neville Pillay
   • Carsten Schradin

   Original Paper 09 January 2021 Pages: 703 - 716

   

5. Early evidence for emotional play contagion in juvenile ravens

   • Katharina Wenig
   • Palmyre H. Boucherie
   • Thomas Bugnyar

   Original Article Open access 09 January 2021 Pages: 717 - 729

   

6. Time perception and patience: individual differences in interval timing precision predict choice impulsivity in European starlings, Sturnus vulgaris

   • Clare Andrews
   • Jonathon Dunn
   • Melissa Bateson

   Original Paper Open access 12 January 2021 Pages: 731 - 745

   

7. Dog–human behavioral synchronization: family dogs synchronize their behavior with child family members

   • Shelby H. Wanser
   • Megan MacDonald
   • Monique A. R. Udell

   Original Paper 12 January 2021 Pages: 747 - 752

   

8. Early life differences in behavioral predispositions in two Alligatoridae species

   • Stephan A. Reber
   • Jinook Oh
   • Anna Wilkinson

   Original Paper Open access 17 January 2021 Pages: 753 - 764

   

9. Repeatability of lateralisation in mosquitofish Gambusia holbrooki despite evidence for turn alternation in detour tests

   • Ivan M. Vinogradov
   • Michael D. Jennions
   • Rebecca J. Fox

   Original Paper 20 January 2021 Pages: 765 - 775

   

10. Rhesus monkeys (Macaca mulatta) monitor evolving decisions to control adaptive information seeking

    • Ryan J. Brady
    • Robert R. Hampton

    Original Paper 21 January 2021 Pages: 777 - 785

    

11. A songbird strategically modifies its blinking behavior when viewing human faces

    • Jessica L. Yorzinski
    • Mary K. Walker
    • Rebecca Cavalier

    Original Paper 27 January 2021 Pages: 787 - 801

    

12. Different effects of reward value and saliency during bumblebee visual search for multiple rewarding targets

    • Vivek Nityananda
    • Lars Chittka

    Original Paper Open access 30 January 2021 Pages: 803 - 814

    

13. Dimensional bias and adaptive adjustments in inhibitory control of monkeys

    • Sadegh Ghasemian
    • Marzieh M. Vardanjani
    • Farshad A. Mansouri

    Original Paper 08 February 2021 Pages: 815 - 828

    

14. Social position indirectly influences the traits yellow-bellied marmots use to solve problems

    • Dana M. Williams
    • Catherine Wu
    • Daniel T. Blumstein

    Original Paper 08 February 2021 Pages: 829 - 842

    

15. A chimpanzee recognizes varied acoustical versions of sine-wave and noise-vocoded speech

    • Lisa A. Heimbauer
    • Michael J. Beran
    • Michael J. Owren

    Original Paper 08 February 2021 Pages: 843 - 854

    

16. The effects of distance on pointing comprehension in shelter dogs

    • Heidi Lyn
    • Megan Broadway
    • Beatrice Chenkin

    Original Paper 10 February 2021 Pages: 855 - 865

    

17. Exclusion in the field: wild brown skuas find hidden food in the absence of visual information

    • Samara Danel
    • Jules Chiffard-Carricaburu
    • Anna P. Nesterova

    Original Paper 16 February 2021 Pages: 867 - 876

    

18. Macaque species with varying social tolerance show no differences in understanding what other agents perceive

    • Alyssa M. Arre
    • Ellen Stumph
    • Laurie R. Santos

    Original Paper 16 February 2021 Pages: 877 - 888

    

19. Training with varying odor concentrations: implications for odor detection thresholds in canines

    • Mallory T. DeChant
    • Nathaniel J. Hall

    Original Paper 01 March 2021 Pages: 889 - 896

    

20. Linguistic laws of brevity: conformity in Indri indri

    • Daria Valente
    • Chiara De Gregorio
    • Marco Gamba

    Original Paper 08 March 2021 Pages: 897 - 906