The lack of validity hinders research in animal cognition Ádám MiklósiJudit Abdai Outlook 08 February 2021 Pages: 259 - 260
Extraordinary claims, extraordinary evidence? A discussion Richard M. ShiffrinDora MatzkeMary C. Murphy Commentary Open access 10 August 2021 Pages: 265 - 275
Jumping spiders: An exceptional group for comparative cognition studies Samuel Aguilar-ArguelloXimena J. Nelson ReviewPaper 14 January 2021 Pages: 276 - 291
Rainbow trout discriminate 2-D photographs of conspecifics from distracting stimuli using an innovative operant conditioning device Aude KleiberClaudiane ValotaireViolaine Colson OriginalPaper 06 January 2021 Pages: 292 - 306
Mixed effects modeling of Morris water maze data revisited: Bayesian censored regression Michael E. YoungMichael R. Hoane OriginalPaper 22 February 2021 Pages: 307 - 320
The olfactory capability of dogs to discriminate between different quantities of food Shayla M. JacksonGlynis K. MartinWilliam A. Roberts OriginalPaper 23 February 2021 Pages: 321 - 329
Longer operant lever-press duration requirements induce fewer but longer response bouts in rats Ryan J. BrackneyRaul GarciaFederico Sanabria OriginalPaper 24 February 2021 Pages: 330 - 342