Fig. 1

PCA analysis of behavioral traits. Since the two GWA datasets only partially overlapped in breed content, PCA analysis was performed to evaluate if the breed makeup affects the distribution structure of the variables. a, b Component pattern and component scores, respectively, of C-BARQ behavioral traits on the matching breeds in the Boyko dataset. c, d Component pattern and component scores of C-BARQ behavioral traits on the matching breeds in the Vaysse dataset