For instance, MacLeod et al. [56] reported candidate genes (i.e., NCOA7, GAD2, PDGFD, TMPRSS5, DRD2, IQSEC1, MAOB, PTPRF, SLC25A16, TMCO5A, and SNRPB2) associated with dairy cattle temperament that were previously linked to human neuropsychiatric disorders (e.g., schizophrenia). This evidence concerns the gene SNRPB2 and schizophrenia.