Okay, it doesn't need to be Egyptian.
Ganesha, Narasimha, Sun Wukong, Zhū Bāijè, Niú Mówáng, Camamotz, the Dresden Codex animal persons, ThunderCats, Jinnalaluo, Street Sharks, Dakuwaga, Kamapua'a, Garuda, the Seven Apkallu, Tengu, Saint Christopher, Gwrgi Garwlwyd (in some depictions), the healfhundingas of the Nowell Codex, Marco Polo's racist and fantastical accounts of cvnocephalic peooles in the Andaman Islands, Chris Colombus's racist and fantastical accounts of cynocephalv among the Taino, cynocephalic characters in the Alexander Romances, hundreds of childrens books with animal headed humans, Cernunnos the Horned God, Pamola, Kitsune/Inari in some traditions (human with a Kitsune mask-like face and nine tails), various semi-furry takes on yōkai in anime and manga and folkore, PAZUZUUUUUUUUUUUUU…
My point is that theriocephaly is a worldwide concept. It's not just Egypt.