Effect of MCHR1 genetic ablation on pups’ retrieval in postpartum female mice. (A) The retrieval latency of WT and MCHR1 KO female mice (n = 19–20). Two way ANOVA followed by followed by Bonferroni post-hoc test (F1,111 = 42.6, P < 0.001): WT vs. KO, PPD1: ***P < 0.001, PPD2: **P < 0.01, PPD3: P > 0.05. (B) The retrieval duration of WT and MCHR1 KO female mice (n = 19–20). Two way ANOVA followed by Bonferroni post-hoc test (F1,111 = 129, P < 0.001): WT vs. KO, PPD1: ***P < 0.001, PPD2: ***P < 0.001, PPD3: ***P < 0.001.