Tigers have round pupils, but domestic cats have vertical slits in the center of their eyes. What gives? A census of the shapes of animals' pupils suggests size and way of life each play a big role.

In contrast, horizontally elongated pupils are nearly always found in grazing animals, which have eyes on the sides of their head. They are also very likely to be prey animals such as sheep and goats.

As part of that research, Banks and students had written briefly about “odd-shaped pupils” in the animal kingdom -- specifically, the vertical slits in the eyes of domestic cats and other ...

Frog and toad pupils come in quite the array, from slits to circles. But overall, there are seven main shapes of these animals’ peepholes, researchers report in the Aug. 25 Proceedings of the ...

A land animals' ecological niche is a strong predictor of pupil shape, a new analysis has found. Species with pupils that are vertical slits are more likely to be ambush predators that are active ...

The answer could determine the shape of your pupils, according to new research that explains why cats have vertical slits and goats rectangular ones. Skip to main content.

Rayna Bell, a herpetology expert and curator at the California Academy of Sciences, told Snopes it's true that some frogs have heart-shaped pupils, adding that the photo in question appears to be ...

Changing the shape of the pupils in your own eyes is both a subtle and dramatic way to remind clients that you stand out from the competition. When cha. Chron Logo Hearst Newspapers Logo.

Take a close look at a house cat's eyes and you'll see pupils that look like vertical slits. But a tiger has round pupils — like humans do.

There's a reason why the domestic cat's pupil has its distinctive, vertical slitted shape and the grazing goat's its horizontal, flattened look.

Pupil shape linked to animals' ecological niche. University of California - Berkeley. Journal Science Advances Funder Engineering and Physical Sciences Research Council, National Institutes of Health ...

Why do the eyes of some animals, including goats, have horizontal-shaped pupils, while others, such as rattlesnakes and domestic cats, have vertical slits? It is a question that has longed ...