The Egyptian god Sobek was pictured with a human body and a head of which animal?

Sobek was an ancient Egyptian deity with a complex and fluid nature.

He is associated with the Nile crocodile or the West African crocodile and is represented either in its form or as a human with a crocodile head. Sobek was also associated with pharaonic power, fertility, and military prowess, but served additionally as a protective deity with apotropaic (having the power to avert evil influences or bad luck) qualities, invoked particularly for protection against the dangers presented by the Nile.