Chimpanzees (Pan troglodytes) and bonobos (Pan paniscus) quantify split solid objects Trix CacchioneChristine HrubeschJosep Call Original Paper 09 August 2012 Pages: 1 - 10
Experimental evidence for action imitation in killer whales (Orcinus orca) José Z. AbramsonVictoria Hernández-LloredaFernando Colmenares Original Paper 09 August 2012 Pages: 11 - 22
Spatial behavior in male and female crayfish (Orconectes rusticus): learning strategies and memory duration Ann Jane TierneyKate Andrews Original Paper 14 August 2012 Pages: 23 - 34
Ravens (Corvus corax) are indifferent to the gains of conspecific recipients or human partners in experimental tasks Felice Di LascioFrançois NyffelerThomas Bugnyar Original Paper 14 August 2012 Pages: 35 - 43
The relevance of temporal cues in a fish sound: a first experimental investigation using modified signals in cichlids Frédéric BertucciJöel AttiaNicolas Mathevon Original Paper 22 August 2012 Pages: 45 - 54
Social learning in juvenile lemon sharks, Negaprion brevirostris Tristan L. GuttridgeSander van DijkCulum Brown Original Paper 30 August 2012 Pages: 55 - 64
Gorillas’ use of the escape response in object choice memory tests Chikako Suda-KingAmanda E. BaniaFrancys Subiaul Original Paper 25 August 2012 Pages: 65 - 84
Conditioned water affects pair formation behaviour in the marine polychaete Neanthes (Nereis) acuminata Ellen J. StoreyDon J. ReishJörg D. Hardege Original Paper 01 September 2012 Pages: 85 - 89
Long-term memory of hierarchical relationships in free-living greylag geese Brigitte M. WeißIsabella B. R. Scheiber Original Paper 06 September 2012 Pages: 91 - 97
Picture–object recognition in the tortoise Chelonoidis carbonaria Anna WilkinsonJulia Mueller-PaulLudwig Huber Original Paper 04 September 2012 Pages: 99 - 107
Bantams (Gallus gallus domesticus) also perceive a reversed Zöllner illusion Sota WatanabeNoriyuki NakamuraKazuo Fujita Original Paper 09 September 2012 Pages: 109 - 115
Same/different discrimination by bumblebee colonies Michael F. BrownJustin M. Sayde Original Paper 04 September 2012 Pages: 117 - 125
Strength of hand preference and dual task performance by common marmosets T. PiddingtonL. J. Rogers Original Paper 29 September 2012 Pages: 127 - 135
Can domestic dogs (Canis familiaris) use referential emotional expressions to locate hidden food? David ButtelmannMichael Tomasello Short Communication 09 September 2012 Pages: 137 - 145
Different chemical cues originating from a shared predator induce common defense responses in two prey species Teruhiko TakaharaHideyuki DoiRyohei Yamaoka Short Communication 14 October 2012 Pages: 147 - 153
