Egyptian deities and animals

Em hotep

I have noticed that many Egyptian deities are oftentimes depicted in animal forms or half-human and half-animal but Aset is depicted only in human form (as far as I am aware of). Also, all egyptian deities that have been shown in animal forms are all known animals except Seth's. I have my own theory about why this is so but I would like to hear some other opinions and possibly discuss this subject.

maybe they are just able to change their appearance as in the same manner the name they are known by is changed.