Mnewer (Mnevis)

In Egyptian mythology, Mnewer is the sacred black bull of Heliopolis, worshipped as a god for its virility and its oracles.

It was also regarded as an emissary of the sun god, and therefore represented with a solar disk between its horns.

Many festivities were held in honor of this bull. The deceased bulls were embalmed and buried at Heliopolos.

The Encyclopedia Mythica