The authors and journal apologise for an error that appearedin the article by Li et al. in the December issue of the Journalof Molecular Endocrinology35 411419, entitled Episodicevolution of prolactin receptor gene in mammals: coevolutionwith its ligand. The error relates to the sequence usedfor dog presented in Table 1 that has been erroneously printedon page 412. The correct entry and the Table are published infull below.