Nocturnal animals tend to have proportionally 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 ...

Nocturnal animals have evolved physical traits that let them roam in the dark more effectively. The eyes get bigger and the pupils widen. Owl eyes, for example, ...

As a result, animals see better at night by double-dipping their light. They can process the light coming inward through their eyes, but also get the information as it goes back outwards. Our primary ...

Eyes that glow in the pitch-black night make for many a scary tale. But why do some animals' eyes glow at night? "A lot of the animals we see, especially the ones that go out at night, ...

But because rod cells only have a single light-sensitive pigment, at night we see in shades of grey. Geckos, on the other hand, have excellent colour vision at night - a useful advantage for a ...

And yes, there are some big-eyed animals of the cute-and-cuddly variety. Tarsiers, tiny nocturnal primates from Southeast Asia, are often cited as having huge eyes for their body size, with a body ...

Nearby, a red-rumped agouti — a South American rodent that looks like a large, long-legged guinea pig — scuttled behind a tree trunk. A few feet away, an Arabian sand cat put its paw inside a log to ...

Warrant, Kelber and another Lund colleague, Anna Balkenius, were the first to show, in a 2002 study, that an animal had color vision at night.

The movie "Jurassic Park" got one thing right: Those velociraptors hunted by night while the big plant-eaters browsed around the clock, according to a new study of the eyes of fossil animals. The ...

Nocturnal animals tend to have proportionally 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 ...