Erratum to: Anim Cogn DOI 10.1007/s10071-010-0314-0

In the “Methods” section of Experiment 1, the specific quantities of fruit juice used were erroneously reported. The correct quantities used were 10, 20, 30, 40, 50, and 60 ml, and these were the quantities represented by the terms 1 through 6 units used throughout the remainder of the paper. All liquids were poured from syringes with a maximum capacity of 60 ml, and they were poured at a rate of 10 ml/s. These errors do not affect any of the results or conclusions of the paper.