This amulet represents a baboon. Amulets of baboons were associated with Thoth, the patron deity of scribes. Baboons were also associated with the sun and moon.
From Nubia, Kerma, K1400 main pit. January 1914: Excavated by the Harvard University-Museum of Fine Arts Expedition; assigned to the MFA by the government of Sudan.
Harvard University—Boston Museum of Fine Arts Expedition