emerging at night to hunt. Photograph by Joel Sartore There might be no single reason for an animal’s nocturnality, however there is a popular theory that mammals are intrinsically nocturnal ...

engaging in activities such as hunting, mating, and socializing. This behavior contrasts with diurnal animals, which are active during daylight hours. The nocturnal lifestyle offers specific ...

Klipspringer is a small and agile antelope. It is known for its excellent jumping ability and a compact body. This animal is ...

Barn owls are seen hunting silently ... After viewing, students could name all the ways in which the nocturnal animals shown in the clip are adapted for night-time living. They could brainstorm ...

Barn owls are seen hunting silently ... After viewing, students could name all the ways in which the nocturnal animals shown in the clip are adapted for night-time living. They could brainstorm ...

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 ...