Facial perception of conspecifics: chimpanzees (Pan troglodytes) preferentially attend to proper orientation and open eyes Satoshi HirataKoki FuwaShin Fujita Original Paper 06 March 2010 Pages: 679 - 688
Inter-individual and age differences in exploration, neophobia and problem-solving ability in a Neotropical raptor (Milvago chimango) Laura Marina BiondiMaría Susana BóAldo Iván Vassallo Original Paper 19 March 2010 Pages: 701 - 710
The benefit of symbols: monkeys show linear, human-like, accuracy when using symbols to represent scalar value Margaret S. LivingstoneKrishna SrihasamIstvan A. Morocz Original Paper Open access 05 May 2010 Pages: 711 - 719
Stereotyping starlings are more ‘pessimistic’ Ben O. BrilotLucy AsherMelissa Bateson Original Paper 13 May 2010 Pages: 721 - 731
Spatial and feature-based memory representation in free-flying homing pigeons Debra L. MauryRoseanne J. MauchVerner P. Bingman Original Paper 09 May 2010 Pages: 733 - 743
Monkeys fail to reciprocate in an exchange task Marie PeléBernard ThierryValérie Dufour Original Paper 16 May 2010 Pages: 745 - 751
Reinforcement as a mediator of the perception of humans by horses (Equus caballus) Carol SankeyMarie-Annick Richard-YrisMartine Hausberger Original Paper 21 May 2010 Pages: 753 - 764
Gaze following in the red-footed tortoise (Geochelone carbonaria) Anna WilkinsonIsabella MandlLudwig Huber Short Communication 22 April 2010 Pages: 765 - 769
The memory remains: long-term vocal recognition in Australian sea lions Benjamin J. PitcherRobert G. HarcourtIsabelle Charrier Short Communication 06 May 2010 Pages: 771 - 776