They are certainly not natural enemies, since there are no pigs or rats on Antarctica. However, I doubt that would stop them from eating a penguin given the opportunity.
Its enemies are shark's,sea lions,killer whales ,seagulls ,sea eagles,dogs,snakes and rats hope you enjoy your answer.Red & green
One of the pigs enemies are humans.
Seals are penguins enemies.
Seals.
rats
Guinea pigs are so so so so so much better than rats.
Buffalo
polar bears
Yes
They look out for enemies.
On Tristan da Cunha live cows, sheep, plenty of border collies, rats (from ships), rockhopper penguins and albatrosses and the Tristan da Cunha rock lobster.
mabe