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Male sage-grouse gather in groups to compete for females.
3:35
The nubian ibex, a desert-dwelling goat, can scale near vertical cliffs.
1:50
An increasingly fragmented landscape is creating problems for the fleet-footed creature.
2:23
Emperor penguin moms rely on sound to find their babies.
2:44
A lion reclaims his kill under cover of darkness.
1:35
Hummingbirds may look cute, but they hide a secret warrior within.
2:17
Asiatic lion cubs enjoy a little rough and tumble with their parents.
2:12
Sea snakes and reef fish help each other snag an easy meal.
1:48
The male Costa's hummingbird tries to woo a mate with a face that resembles an octopus!
2:11
Hippos get scrubbed from head to toe by a fish called the barbell.
4:52
A rising tide can spell the end for saltmarsh sparrows chicks.
7:43
See how a key scene in NATURE's "Animal Homes" was filmed.
