It's easy to think of pupils as simple holes that widen in the dark and shrink in the light. But if you look across the animal kingdom, you'll see a variety of pupil shapes: vertical slits in cats and ...

Animal eyes can reveal whether a creature spends its life hunting or trying not to be hunted. Cats and other predators can ...

Nature has developed some truly bizarre ways for animals to see the world around them. Some creatures have strangely shaped pupils, while others can see in multiple directions at once or detect colors ...

One of the funnier animal-related trends on social media lately involves content creators digitally editing animals that have side-facing eyes. In these hilarious (and sometimes unsettling) edits, ...