In Egyptian mythology, Taweret ("great one") was a hippopotamus-goddess of pregnant women, homes and, most importantly, childbirth (Bes was her companion). Pregnant women wore amulets with her name on them.
In art, she had large breasts, a large belly and the head of a hippopotamus, the limbs of a lion and a crocodile's tail.
Rosicrucian Egyptian Museum at San Jose, California has Taweret at its entrance.
Alternative: Opet, Toeris, Taueret, Taurt, Apet