1. How the Thatcher illusion reveals evolutionary differences in the face processing of primates

   • Kimberly B. Weldon
   • Jessica Taubert
   • Lisa A. Parr

   Original Paper 19 February 2013 Pages: 691 - 700

   

2. Switching strategies: a dolphin’s use of passive and active acoustics to imitate motor actions

   • Kelly Jaakkola
   • Emily Guarino
   • Jane Hecksher

   Original Paper 07 February 2013 Pages: 701 - 709

   

3. Eighteen-month-old human infants show intensive development in comprehension of different types of pointing gestures

   • Edina Pfandler
   • Gabriella Lakatos
   • Ádám Miklósi

   Original Paper 15 February 2013 Pages: 711 - 719

   

4. Test sensitivity is important for detecting variability in pointing comprehension in canines

   • Péter Pongrácz
   • Márta Gácsi
   • Ádám Miklósi

   Original Paper 08 February 2013 Pages: 721 - 735

   

5. Pigeons learn virtual patterned-string problems in a computerized touch screen environment

   • Edward A. Wasserman
   • Yasuo Nagasaka
   • Stephen J. Brzykcy

   Original Paper 09 February 2013 Pages: 737 - 753

   

6. Means–end comprehension in four parrot species: explained by social complexity

   • Anastasia Krasheninnikova
   • Stefan Bräger
   • Ralf Wanker

   Original Paper 09 February 2013 Pages: 755 - 764

   

7. Inequity aversion in human adults: testing behavioural criteria from comparative cognition

   • Ljerka Ostojić
   • Nicola S. Clayton

   Original Paper 16 February 2013 Pages: 765 - 772

   

8. Facial expressions in common marmosets (Callithrix jacchus) and their use by conspecifics

   • Caralyn Kemp
   • Gisela Kaplan

   Original Paper 15 February 2013 Pages: 773 - 788

   

9. Higher-order semantic structures in an African Grey parrot’s vocalizations: evidence from the hyperspace analog to language (HAL) model

   • Allison B. Kaufman
   • Erin N. Colbert-White
   • Curt Burgess

   Original Paper 17 February 2013 Pages: 789 - 801

   

10. Solving small spaces: investigating the use of landmark cues in brown capuchins (Cebus apella)

    • Kelly D. Hughes
    • Enma Mullo
    • Laurie R. Santos

    Original Paper 22 February 2013 Pages: 803 - 817

    

11. Egg arrangement in avian clutches covaries with the rejection of foreign eggs

    • Lenka Polačiková
    • Fugo Takasu
    • Tomáš Grim

    Original Paper 27 February 2013 Pages: 819 - 828

    

12. Monkeys perform as well as apes and humans in a size discrimination task

    • Vanessa Schmitt
    • Iris Kröger
    • Julia Fischer

    Original Paper Open access 27 February 2013 Pages: 829 - 838

    

13. Testing visual short-term memory of pigeons (Columba livia) and a rhesus monkey (Macaca mulatta) with a location change detection task

    • Kenneth J. Leising
    • L. Caitlin Elmore
    • Anthony A. Wright

    Short Communication 11 June 2013 Pages: 839 - 844

    

14. Working and reference memory of pigs (Sus scrofa domesticus) in a holeboard spatial discrimination task: the influence of environmental enrichment

    • J. Elizabeth Bolhuis
    • Marije Oostindjer
    • Bas Kemp

    Short Communication 06 June 2013 Pages: 845 - 850