There were several different and unconnected ram-headed gods in the Egyptian pantheon:
Khnum (hieroglyphs xnm) the potter who created mankind on his wheel
Ba neb djedet, a manifestation of Osiris as a ram-headed deity
Herishef (meaning "he who is upon his lake")
Kherti
Andjety
Auf (an aspect of Ra as a ram-headed deity with a sun disk)
Harmakhet (a ram-headed manifestation of Horus as a Sphinx)
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Auf (Efu Ra) - An aspect of the sun god Ra/Re, with the head of a ram and who wore the solar disc and traveled at night through the Underworld waterways in order to reach the east in time for the new day; however, he still had to fight off the creatures of the Underworld.
The head of Thoth is that of an Ibis.
In Ancient Egyptian religion, the ram was the symbol of several gods: Khnum, Heryshaf and Amun (in his incarnation as a god of fertility).
There was no Egyptian crow/raven god or goddess.
The Goddess Bast/Bastet has the head of a cat, in Egyptian mythology.
Sobek. He was depicted as a man with the head of a crocodile. He was also a god of the Nile.