Rodent pups use vocalizations to communicate with one or both parents in biparental species. such as California mice (Peromyscus californicus). Previous studies have shown California mice developmentally exposed to endocrine disrupting chemicals. bisphenol A (BPA) or ethinyl estradiol (EE). https://www.spidertattooz.com/Army-Patch-44th-Infantry-Brigade-Combat-Team-embroidered-on-OCP/