Why do Australian Shepherds often have two different-colored eyes?
The Two-Eyed Dice Roll
Why do Australian Shepherds often have two different-colored eyes?

You've seen them at the dog park — those fluffy, bouncing Australian Shepherds with one blue eye and one brown eye, like they're wearing mismatched contact lenses. It looks like a mistake, but it's actually a cool genetic trick that starts before they're even born.
Here's the secret: eye color comes from a pigment called melanin — the same stuff that colors your skin and hair. More melanin means darker eyes. Less melanin means lighter eyes, like blue or green.
