A jaguar fights to keep his river home in Brazil as the night brings both challenges and opportunities to hunt.

After dark on Kenya's Maasai Mara grasslands, a lioness won't rest until she finds the young cubs she's lost.

In the boreal forests of Europe, a young brown bear clashes with wolves—and tries to find a mate beneath the stars.

When Los Angeles, Chicago, and Toronto light up at nightfall, they create worlds of opportunities for the cleverest animals willing to take the risk.

In Kenya's Maasai Mara, two cheetah brothers attempt a high-speed night hunt with a gang of powerful hyenas on their trail.

As darkness falls, a family of tiny primates in Sulawesi ventures into the jungle to find food while protecting their babies.

A family of African elephants leverage the cool night to journey in search of water, but the darkness leaves them unexpectedly vulnerable.

A young puma coming of age in the Patagonian mountains must learn to survive on her own after her mother leaves to start a new family.

Trying to survive the Australian night, a family of kangaroos evade a pack of hungry dingoes hunting them in the darkness.

As night descends, the coral reef world transforms. A dazzling realm of hidden hunters and natural wonders emerge from the dark.

On Namibia’s Skeleton Coast, a seal pup left home alone must outwit jackals and hyena ambushes to survive the night.

A mother polar bear must lead her cubs through one of the year's coldest, longest nights at the onset of arctic winter.