They live in southern Africa, and are both solitary and strictly nocturnal. The cats can kill as many as 14 small animals in a single night. When a mandarin duckling hatches, its mother has to ...

The slow loris, with its big eyes and teddy-bear-like face, may look like the cutest primate, but it’s also one of the deadliest. Found in Southeast Asia, this nocturnal animal has venomous ...

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 ...