Regions with more neurons in males are linked to fear and anxiety (Yang and Wang, 2017), social and contextual memory (Okuyama et al., 2016), mate identification and olfaction (Cádiz-Moretti et al., 2016; Wang et al., 2020a), regulation of neuropeptide secretion (Brown, 2016), and male-specific sexual behavior (Schmidt et al., 2000). Here, NPS is linked to Anxiety.