1. Stimulus enhancement and spread of a spontaneous tool use in a colony of long-tailed macaques

   • Klaus Zuberbühler
   • Lorenz Gygax
   • Hans Kummer

   OriginalPaper Pages: 1 - 12

2. Scent-marking in ring-tailed lemurs: Responses to the introduction of “foreign” scent in the home range

   • Neil F. Ramsay
   • Paul S. Giller

   OriginalPaper Pages: 13 - 23

3. Recognition of facial expressions in a Japanese monkey (Macaca fuscata) and humans (Homo sapiens)

   • So Kanazawa

   OriginalPaper Pages: 25 - 38

4. What chimpanzees (Pan troglodytes) learn in a cooperative task

   • Raphael Chalmeau
   • Alain Gallo

   OriginalPaper Pages: 39 - 47

5. Morphological changes of the ovary and hormonal changes through the ovarian cycle of the common marmoset (Callithrix jacchus)

   • Ryuzo Torii
   • David H. Abbott
   • Hideo Nigi

   OriginalPaper Pages: 49 - 56

6. Genetic polymorphism of alpha-1-antitrypsin correlates with a classification of African green monkeys

   • Elena Samilchuk

   OriginalPaper Pages: 57 - 63

7. Taxonomy of theAlouatta seniculus group: Biochemical and chromosome data

   • Iracilda Sampaio
   • Maria Paula Cruz Schneider
   • Horacio Schneider

   OriginalPaper Pages: 65 - 73

8. Birth-related behaviors in wild proboscis monkeys (Nasalis larvatus)

   • Andrea B. Gorzitze

   Short Communication Pages: 75 - 78

9. Anticipation of conflict by chimpanzees

   • N. F. Koyama
   • R. I. M. Dunbar

   Short Communication Pages: 79 - 86

10. Seed predation ofCariniana estrellensis (Lecythidaceae) by black howler monkeys,Alouatta caraya

    • Ary T. Oliveira-Filho
    • Mauro Galetti

    Short Communication Pages: 87 - 90

11. Taste preference thresholds for food-associated sugars in the squirrel monkey (Saimiri sciureus)

    • Matthias Laska

    Short Communication Pages: 91 - 95

12. A multi-task assessment of hand lateralization in capuchin monkeys (Cebus apella)

    • J. R. Anderson
    • C. Degiorgio
    • J. Fagot

    Short Communication Pages: 97 - 103

13. In vitro testing of the biological activity ofRubia cordifolia leaves on primateStrongyloides species

    • Ellen J. Messner
    • R. W. Wrangham

    Short Communication Pages: 105 - 108

14. Behavioral and hormonal aspects of reproduction in captive goeldi’s monkeys (Callimico goeldii) in a comparative and evolutionary context

    • Mike H. Jurke

    Review Pages: 109 - 119