Hindus remain austere and refrain from participating in any religious ritual for a specified number of days (mostly 13) when any family member expires.
The popular thought is that the home becomes "ashuddha" and requires purification (either by virtue of 'Garuda Purana' or 'Gayatri Paath'). While I agree that these rituals may be necessary for the peace of the departed soul and their afterlife, but I am finding it difficult to understand why the home becomes contaminated.
My questions are:
What is the need to follow a period of aśuddha or aśauca following the death of a family person?
Does the same aśuddha or aśauca apply when a pet or any other living being dies, as the soul departs in all of these other cases too?
Is there a logical explanation for all this?