https://upload.wikimedia.org/wikipedia/commons/6/63/El_pesado_del_coraz%C3%B3n_en_el_Papiro_de_Hunefer.jpg Detail from the Papyrus of Hunefer (c. 1275 BC) depicts the jackal-headed Anubis weighing a heart against the feather of truth on the scale of Maat, while ibis-headed Thoth records the result. Having a heart equal to the weight of the feather allows passage to the afterlife, whereas an imbalance results in a meal for Ammit, the chimera of crocodile, lion, and hippopotamus.