Tool-use-associated sound in the evolution of language Matz Larsson Review 29 June 2015 Pages: 993 - 1005
Relative versus absolute numerical representation in fish: Can guppies represent “fourness”? Maria Elena Miletto PetrazziniChristian AgrilloAngelo Bisazza Original Paper 07 April 2015 Pages: 1007 - 1017
When is it worth waiting for? Food quantity, but not food quality, affects delay tolerance in tufted capuchin monkeys Francesca De PetrilloEmanuele GoriElsa Addessi Original Paper 18 April 2015 Pages: 1019 - 1029
A temporal context repetition effect in rats during a novel object recognition memory task Joseph R. MannsClaire R. GallowayPer B. Sederberg Original Paper 28 April 2015 Pages: 1031 - 1037
Rats demonstrate helping behavior toward a soaked conspecific Nobuya SatoLing TanMaya Okada Original Paper 12 May 2015 Pages: 1039 - 1047
Erratum to: Rats demonstrate helping behavior toward a soaked conspecific Nobuya SatoLing TanMaya Okada Erratum 25 July 2015 Pages: 1049 - 1049
Experimental evidence of contagious yawning in budgerigars (Melopsittacus undulatus) Andrew C. GallupLexington SwartwoodSerena Sackett Original Paper 27 May 2015 Pages: 1051 - 1058
Visual illusions in predator–prey interactions: birds find moving patterned prey harder to catch Liisa HämäläinenJanne ValkonenBibiana Rojas Original Paper 07 May 2015 Pages: 1059 - 1068
Chimpanzees strategically manipulate what others can see Katja KargMartin SchmelzMichael Tomasello Original Paper 12 May 2015 Pages: 1069 - 1076
Perception and discrimination of movement and biological motion patterns in fish V. SchluesselN. KortekampH. Bleckmann Original Paper 17 May 2015 Pages: 1077 - 1091
The learning of action sequences through social transmission Andrew WhalenDaniel CowndenKevin Laland Original Paper 26 May 2015 Pages: 1093 - 1103
Waiting for what comes later: capuchin monkeys show self-control even for nonvisible delayed rewards Bonnie M. PerdueJessica L. BramlettMichael J. Beran Original Paper 30 May 2015 Pages: 1105 - 1112
Song plasticity over time and vocal learning in clay-colored thrushes Luis E. Vargas-CastroNatalie V. SánchezGilbert Barrantes Original Paper 27 June 2015 Pages: 1113 - 1123
Quantification acuity in spontaneous shoaling decisions of three-spined sticklebacks Marion MehlisTimo ThünkenJoachim G. Frommen Original Paper 23 June 2015 Pages: 1125 - 1131
Experimental shifts in egg–nest contrasts do not alter egg rejection responses in an avian host–brood parasite system Mark E. HauberZachary AidalaCsaba Moskát Original Paper 29 June 2015 Pages: 1133 - 1141
Conditional discrimination and response chains by worker bumblebees (Bombus impatiens Cresson, Hymenoptera: Apidae) Hamida B. MirwanPeter G. Kevan Original Paper 07 July 2015 Pages: 1143 - 1154
Titmouse calling and foraging are affected by head and body orientation of cat predator models and possible experience with real cats D. L. BookTodd M. Freeberg Original Paper 30 June 2015 Pages: 1155 - 1164
Learned vocal and breathing behavior in an enculturated gorilla Marcus PerlmanNathaniel Clark Original Paper 03 July 2015 Pages: 1165 - 1179
Carrion crows learn to discriminate between calls of reliable and unreliable conspecifics Claudia A. F. WascherFriederike HillemannVittorio Baglione Short Communication 12 June 2015 Pages: 1181 - 1185
Pigeons (Columba livia) fail to connect dots in learning biological motion Eriko YamamotoKazuhiro GotoShigeru Watanabe Short Communication 05 June 2015 Pages: 1187 - 1191
Erratum to: Emotions on the loose: emotional contagion and the role of oxytocin in pigs Inonge ReimertJ. Elizabeth BolhuisT. Bas Rodenburg Erratum 13 June 2015 Pages: 1193 - 1194
