The sycomore fig tree and the fig wasp share a curious and important co-dependency.

Located along the riverbanks of southern Kenya, the sycomore fig tree feeds more varieties of animals than any other kind of tree in Africa.

Watch the full episode of "Holy Cow" online now.

Eight-year-old Thomas was born with a rare genetic disorder, which resulted in a lot of trouble communicating with his parents. Now, Thomas undergoes dolphin therapy in the Florida Keys.

Only 16 years old, George has been homeless, and he spent some time in jail. However, since meeting a quarter horse named Ostentatious, George says he's finally found a friend.

These clips from the NATURE episode "Violent Hawaii" illustrate how erosion has shaped Hawaii's landscape, and show measures being taken there to limit theprocesses of erosion.

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In Scandinavia, an unattended ice fishing line turns provides an easy meal for a clever raven -- until the frustrated fisherman finally discovers the thief's identity.

Some ravens have taken to stealing and hiding golf balls, perhaps because they look like eggs.

Two courting eagles drop through the sky with talons locked. But a nearby raven can't resist the opportunity to stir up mischief.