Who Was Mummified
You probably think that everybody got mummified but you're WRONG! Only Pharaohs and nobles got this treatment. Maybe occasionally a common person got this treatment but not very often, because it was very expensive.
For religious reasons, some of the animals were also mummified. Some of these animals were baboons, crocodiles, birds, and cats. Cats were really important, just like the sacred bulls from early dynasties. They even had their own cemeteries!