Infanticide and social flexibility in the genus Gorilla Juichi YamagiwaJohn KahekwaAugustin Kanyunyi Basabose Review Article 18 August 2009 Pages: 293 - 303
Rib orientation and implications for orthograde positional behavior in nonhuman anthropoids Miyuki KagayaNaomichi OgiharaMasato Nakatsukasa Original Article 16 June 2009 Pages: 305 - 310
New proconsuloid postcranials from the early Miocene of Kenya Daniel L. GeboNasser R. MalitIsaiah Odhiambo Nengo Original Article 09 June 2009 Pages: 311 - 319
Group unity of chimpanzees elucidated by comparison of sex differences in short-range interactions in Mahale Mountains National Park, Tanzania Tetsuya Sakamaki Original Article 11 June 2009 Pages: 321 - 332
Pirouettes: the rotational play of wild chimpanzees Toshisada NishidaAgumi Inaba Original Article 30 June 2009 Pages: 333 - 341
A social network analysis of primate groups Claudia KasperBernhard Voelkl Original Article 17 June 2009 Pages: 343 - 356
On the occurrence of Cebus flavius (Schreber 1774) in the Caatinga, and the use of semi-arid environments by Cebus species in the Brazilian state of Rio Grande do Norte Renata G. FerreiraLeandro JerusalinskyFátima Arruda Original Article 03 July 2009 Pages: 357 - 362
Standardised protocol for primate faecal analysis William C. McGrewLinda F. MarchantCaroline A. Phillips Short Communication 28 May 2009 Pages: 363 - 366
Takeshi Furuichi, Jo Thompson (eds.): The Bonobos: behavior, ecology and conservation Randall L. Susman Book Review 04 April 2009 Pages: 367 - 369
Shoji Itakura, Kazuo Fujita (eds.): Origins of the social mind: evolutionary and developmental views Henrike Moll Book Review Open access 23 April 2009 Pages: 371 - 373
Sylvia Atsalis, Susan W. Margulis, Patrick R. Hof (eds): Primate reproductive aging: cross-taxon perspectives (Interdisciplinary Topics in Gerontology) Keiko Shimizu Book Review 12 June 2009 Pages: 375 - 376
The Primates 2009 Most-Cited Paper Award is conferred upon Dr. Andrew J. Plumptre Announcement 17 September 2009 Pages: 377 - 377
