Run Two animations on one animator simultaniously

Hi
I'm new in unity.
I want to animate explanation of pinch on touch screen.
I want to do this by 2 circles that getting closer one to another.
So I want to use one gameObject-which has a circle sprite. Then I want to attach an animator componenet to this gameObject, and run two animation clips simultaniously. one for every circle.
How can I do that?
I tried to do this but I didn't succeeded to run 2 clips simultaniously in one animator.
I dont want to use two gameObjects with one animation clip it's bad.
how can I do this elegantly?

 

If you want 2 animation clips to run at the same time in an animator you must use a 2nd layer