Opposite effects of maternal and paternal grandmothers on infant survival in historical Krummhörn Eckart VolandJan Beise Original Article Pages: 435 - 443
Does reproductive state affect a lizard's behavior toward predator chemical cues? Sharon J. DownesDirk Bauwens Original Article Pages: 444 - 450
Mating success on white-bearded manakin (Manacus manacus) leks: male characteristics and relatedness Lisa Shorey Original Article Pages: 451 - 457
Social monitoring and vigilance behavior in brown capuchin monkeys (Cebus apella) Ben T. Hirsch Original Article Pages: 458 - 464
Possibilities for error during communication by neotropical frogs in a complex acoustic environment Lori WollermanHaven R. Wiley Original Article Pages: 465 - 473
Do male "long-distance calls" function in mate defense? A comparative study of long-distance calls in primates Serge A. WichCharles L. Nunn Original Article Pages: 474 - 484
Seasonal variation and social correlates of androgen excretion in male redfronted lemurs (Eulemur fulvus rufus) Julia OstnerPeter M. KappelerMichael Heistermann Original Article Pages: 485 - 495
Female behaviour mediates male courtship under predation risk in the guppy (Poecilia reticulata) Jonathan P. EvansJennifer L. KelleyAndrea Pilastro Original Article Pages: 496 - 502