One of only 40 Amur leopards left in the wild, a mother works hard to get her young cub through the winter.
When that bamboo diet doesn’t get you fat enough to hibernate…
Sandhill crane families face a storm on the way to Mexico.
She isn’t much to look at, but this Bald Eagle’s got attitude for days.
Tiny squirrels and giant bears alike must take great risks to prepare for winter.
These aerial predators must spend every daylight hour scanning the slopes for prey.
How do emperor penguins survive the cruelest winters on earth?
When chicks are left home alone in negative 40 degree weather, huddling is their only hope.