Tawaret is a fertility goddess of pregnancy, childbirth, and
the annual flooding of the Nile (with the resultant fertile
soil it brings). She is typically depicted as a very pregnant
woman (with huge belly and pendulous breasts) with a hippopotamus
head. Tawaret is also known as a goddess who protects against
evil by restraining it; thus, she became the concubine of
Set after his fall from favor in the Egyptian pantheon, and
restrains him with a chain from doing further evil.