Erratum to: Anim Cogn (2015) 18:517–532 DOI 10.1007/s10071-014-0820-6

The original publication of this article unfortunately contained an error in Table 5. The superscript letters “a, b” were unintentionally omitted under the column head “Without naive pigs present” in the rows of “Standing alert”, “Ears back”, “Tail in curl” and “Tail wagging”. The corrected table is given below.

Table 5 Behavior of the training pigs during a positive and negative treatment in two situations: without the presence of two naive pen mates and in the presence of two naive pen mates in the test room