Weird Eye Color

My cousin's dog is about four months old, Australian Shepard. He has something that I've never seen in my life among any animal. His one eye (right) is two different colors. And I don't mean it is speckled with different colors. No, it is split down the middle vertically with the outer half of his right eye being sort of hazel and the inner half of the same eye being a pale blue.

Zoom in on his right eye. I've never seen any creature have an eye with split eye color. It's wild to me. I'm not saying it's never happened, I've just never seen it.

I've seen animals and people with two different colored eyes, but never one eye be two different colors.

This is not heterochromia where each eye is a different color.