Nocturnal animals ... bigger eyes than humans do. They also tend to have pupils that open more widely in low light. So, at the outset, nocturnal eyes gather more light than human eyes do.

“If you ask people what animal eyes are used for, they’ll say: same thing as human eyes ... because they came in so many distinct shapes and forms. The late Walter Gehring, a Swiss ...

Research led by UC Berkeley scientists revealed that the shape of an animal's eyes and pupils can ... concept can be used to ...

Nocturnal animals ... bigger eyes than humans do. They also tend to have pupils that open more widely in low light. So, at the outset, nocturnal eyes gather more light than human eyes do.