Human beings, and other beings, have different selves, they have different identities.These are mental events of identifying with form, sensation, conceptualization and volition skandhas ( first four among the five aggregates). Identity itself is mainly conceptualisation (samjna) and volition (samskara) skandhas.
These selves are for example:
Nationality self
Species self; you are human, or you are dog, horse, fox, vulture, snake, etc.. or you are a deva, asura, naga, rakshasa and so on...
Racial self; you are white, yellow, black, red, or something else,
Professional self; you are a plumber, airplanemechanic, salesperson, schoolteacher, nurse, military person, etc...
Political self
Religious self
Sexual self
Sports self
Hobby self
etc...
You are these selves even in your dream state.
In the end, when you get old, and when you die, these selves gradually dissolve, they become nothing, you yourself become nothing, these selves turn out to be without permanent reality,...

