show Abstracthide AbstractParental care, and especially maternal care, is a common behavioral characteristic of mammals. Female parenting is obligate because mammalian offspring need to nurse, but fathering behavior among mammals is rare; only 3-5% of mammalian species exhibit biparental care. Mechanisms of fathering behavior remain sparsely studied. Here we attempt to identify new targets involved in the regulation of fathering behavior using RNA sequencing.