Belly Buttons: Every Belly Has One

I've been noticing a trend in Kamden's drawings lately...he likes to add a belly button to everyone that he draws. Take a look:

This is a picture of me & Kamden...I'm choosing to ignore the fact that I have horns.

Some people enjoying the sun and the moon:

This is a self-portrait of Kamden blasting off inside of a rocket ship:

And the babies have belly buttons:

The people have belly buttons:

Even the mouse has a belly button:

So, you see, no matter how different we might be, we ALL have a belly button.