When it comes to dogs, you've probably noticed that most of them have brown eyes, which is why meeting one sporting a different shade really makes them stand out. While you've probably seen a few pups ...

Human eye colour is one of the most striking and memorable features, ranging from deep brown to icy blue, rare green, and shifting hazel tones. Behind this diversity lies a fascinating interplay of ...

Davinia Beaver does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...