Pierre, a venerable 25 years old, was going bald, which left him with an embarrassingly exposed, pale pink behind. Unlike marine mammals, which have a layer of blubber to keep them warm, penguins ...

Pierre, a venerable 25 years old, was going bald, which left him with an embarrassingly exposed, pale pink behind. Unlike marine mammals, which have a layer of blubber to keep them warm, penguins ...

Pierre, a venerable 25 years old, was going bald, which left him with an embarrassingly exposed, pale pink behind. Unlike marine mammals, which have a layer of blubber to keep them warm, penguins ...

This sea lion aborts its pursuit of some king penguins on a stunning beach in the Falkland Islands. Find out why.

Pair of red-tailed hawks adopted by California bald eagles, raised as their young "Like most elderly penguins, ET developed arthritis, for which she received medication, and she had impaired ...

This time, the pollutant is mercury, and the sentinels are penguins living in the farthest ... it was the reproductive threat to birds -- the bald eagle in particular -- that spurred people ...