- While most penguins are monogamous, they spend most of their year apart.
- There are 17 to 20 species of penguins, depending on which scientist you ask.
- Some prehistoric penguin species attained enormous sizes, becoming as tall or as heavy as an adult human.
- The oldest known fossil penguin species lived in the early Paleocene epoch
- 1 in 50,000 penguins are born with brown rather than black plumage.
- Magellanic penguins always return to same mate after solo journeys totalling 200,000 miles.
- Scientists can locate colonies of Penguins from space just by looking for dark ice patches of penguin poop.
- There are no penguins
- in the Arctic.
- Seals like to have sex with penguins.
- Penguins generally only lay one brood. The exception is the little penguin, which can raise two or three broods in a season.
- When penguin mothers lose a chick, they sometimes attempt to "steal" another mother's chick.
- The most northerly penguins live in the Galapagos Islands.
- It is illegal for U.S. citizens to eat penguins.
- Penguins don't have teeth. Instead, they have backward-facing fleshy spines that line the inside of their mouths.
- Once a year, penguins replace their old feathers by new ones.
- The largest living species of Penguins is the Emperor Penguin. They are about 1.1 m (3 ft 7 in) tall and weigh about 35 kg (77 lb).
- Penguins can't taste sweet or savory flavors, only sour and salty ones.
- Many species of penguins gift mates with rocks.