The "mask of Anubis" is a bit of a misnomer. While Anubis is often depicted wearing a mask, it's more accurate to say he is represented by a jackal head, which is an important aspect of his iconography.

Here's a breakdown:

* Anubis's "mask" is actually a jackal's head. This is a key part of his visual identity, signifying his role as the god of the dead.

* It is not a separate item he wears. It's an integral part of his being, representing his connection to the afterlife and his role as a guide for souls.

* Anubis is often depicted with a human body and a jackal's head. This combination emphasizes his dual nature – he is both human and divine, guiding souls through the underworld.

Therefore, while the "mask" of Anubis is a common term, it's more accurate to say he is depicted with a jackal head. This emphasizes the deeper symbolic meaning behind his appearance and his role in Egyptian mythology.