Animator resetting my colliders2D

I want to change the size, center , radius... whatever of my colliders at start. I'm using sprites. But my animator keep resetting this values. If i disable the animator the changes are kept. Is that normal ? how to prevent this ?

i'm just doing this

 void Start ()
     {
         animator = GetComponent<Animator>();
     
     
         boxCol.center = new Vector2(0.37f, 1.75f);
         boxCol.size = new Vector2(1.5f,2.62f);
         circleCol.center.Set(0.29f,0.67f);
 
     }