Persistence in gestural communication predicts sociality in wild chimpanzees Anna Ilona RobertsSam George Bradley Roberts Original Paper Open access 19 October 2018 Pages: 605 - 618
Transitive inference in pigeons may result from differential tendencies to reject the test stimuli acquired during training Thomas R. ZentallDaniel PengLuke Miles Original Paper 29 March 2019 Pages: 619 - 624
Speed–accuracy trade-off, detour reaching and response to PHA in Carib grackles Simon DucatezJean-Nicolas AudetLouis Lefebvre Original Paper 30 March 2019 Pages: 625 - 633
What do wild saiga antelopes tell us about the relative roles of the two brain hemispheres in social interactions? Andrey GiljovYegor MalashichevKarina Karenina Original Paper 08 April 2019 Pages: 635 - 643
Inhibitory control and memory in the search process for a modified problem in grey squirrels, Sciurus carolinensis Pizza Ka Yee ChowStephen E. G. LeaThéo Robert Original Paper Open access 11 April 2019 Pages: 645 - 655
Discrimination learning and judgment bias in low birth weight pigs Sanne RoelofsFloor A. C. AlferinkRebecca E. Nordquist Original Paper Open access 03 May 2019 Pages: 657 - 671
Flexible gaze-following in rhesus monkeys Rosemary BettleAlexandra G. Rosati Original Paper 16 May 2019 Pages: 673 - 686
Experimental evidence for heterospecific alarm signal recognition via associative learning in wild capuchin monkeys Brandon C. WheelerMartin FahyBarbara Tiddi Original Paper Open access 08 May 2019 Pages: 687 - 695
Sleep influences cognitive performance in lemurs David R. SamsonAlexander ViningCharles L. Nunn Original Paper 04 May 2019 Pages: 697 - 706
Can cattle visually discriminate between green and dead forages at a short distance while moving in the field? Masahiko HirataChie ArimotoHiroki Anzai Original Paper 24 May 2019 Pages: 707 - 718
Sharing playful mood: rapid facial mimicry in Suricata suricatta Elisabetta PalagiElena MarchiFrancesca Bandoli Original Paper 21 May 2019 Pages: 719 - 732
Effects of set size on identity and oddity abstract-concept learning in rats Lucia LazarowskiAdam GoodmanKatherine Bruce Original Paper 30 May 2019 Pages: 733 - 742
Food caching in city birds: urbanization and exploration do not predict spatial memory in scatter hoarders Megan J. ThompsonJulie Morand-Ferron Original Paper 03 June 2019 Pages: 743 - 756
Effects of breed group and development on dogs’ willingness to follow a human misleading advice Shanis BarnardChiara PassalacquaEmanuela Prato-Previde Original Paper 03 June 2019 Pages: 757 - 768
Ducklings imprint on chromatic heterogeneity Antone Martinho-TruswellBethan McGregorAlex Kacelnik Original Paper Open access 10 June 2019 Pages: 769 - 775
Identification of potential signature whistles from free-ranging common dolphins (Delphinus delphis) in South Africa J. FeareyS. H. ElwenT. Gridley Original Paper 08 June 2019 Pages: 777 - 789
Innovative problem solving in great apes: the role of visual feedback in the floating peanut task Sonja J. EbelMartin SchmelzJosep Call Original Paper Open access 05 July 2019 Pages: 791 - 805
Spontaneous attention and psycho-physiological responses to others’ injury in chimpanzees Yutaro SatoSatoshi HirataFumihiro Kano Original Paper 10 June 2019 Pages: 807 - 823
Positional encoding in cotton-top tamarins (Saguinus oedipus) Elisabetta VersaceJessica R. RoggeAndrea Ravignani Original Paper Open access 01 July 2019 Pages: 825 - 838
Is the consonant bias specifically human? Long–Evans rats encode vowels better than consonants in words Camillia BouchonJuan M. Toro Original Paper 19 June 2019 Pages: 839 - 850
What are the costs of learning? Modest trade-offs and constitutive costs do not set the price of fast associative learning ability in a parasitoid wasp Maartje LieftingJessica L. RohmannJacintha Ellers Original Paper Open access 20 June 2019 Pages: 851 - 861
Evidence for discrimination between feeding sounds of familiar fish and unfamiliar mammal-eating killer whale ecotypes by long-finned pilot whales Charlotte CuréSaana IsojunnoPatrick J. O. Miller Original Paper 22 June 2019 Pages: 863 - 882
Linear numerosity illusions in capuchin monkeys (Sapajus apella), rhesus macaques (Macaca mulatta), and humans (Homo sapiens) Audrey E. ParrishMichael J. BeranChristian Agrillo Original Paper 29 June 2019 Pages: 883 - 895
Correction to: Linear numerosity illusions in capuchin monkeys (Sapajus apella), rhesus macaques (Macaca mulatta), and humans (Homo sapiens) Audrey E. ParrishMichael J. BeranChristian Agrillo Correction 19 July 2019 Pages: 897 - 900
Cats match voice and face: cross-modal representation of humans in cats (Felis catus) Saho TakagiMinori ArahoriKazuo Fujita Short Communication 10 May 2019 Pages: 901 - 906