There is good amount of evidence to believe that all the life forms have ego. You can not have a life form without the feeling of ego. This ego gives you desire to preserve your self. This ego gives you desire to reproduce. These both factors forms basis of every life form. There is no evidence to believe that this ego is more or less in any species of animal, plant or microorganism. Probably same is true with the viruses also. There is no evidence to believe that this ego is more or less in any individual life form.

Ego integrity refers to a person's sense of wholeness and satisfaction with their life. It encompasses a feeling of contentment and acceptance of one's life experiences, choices, and circumstances, leading to a sense of fulfillment and completeness in old age. Ego integrity is a concept from Erik Erikson's psychosocial theory of development.

When conflicting demands create a sense of threat and overwhelm for the ego, this can lead to a state of cognitive dissonance. Cognitive dissonance refers to the psychological discomfort that arises when an individual holds conflicting beliefs or attitudes, leading to a sense of imbalance or distress.

A bruised ego refers to feeling hurt or upset because of a blow to one's self-esteem or pride. It can happen when someone's feelings are hurt by criticism, rejection, or failure, causing them to feel embarrassed, insecure, or vulnerable.

The cast of The Sound of Feeling - 2010 includes: Meredith Adelaide as Fiona Qamron Crooks as Alter Ego Joey Jackson as Lazarus Dixon Phillips as The Doctor