No piece of paper can be folded more than 9 times.

In 1987, an American airline saved approximately $100,000 by removing one olive from the in-flight meal for each first-class passenger.

Marilyn Monroe had six toes.

Pigs cannot look up at the sky.

If the first day of a month is a Sunday, then that month will have a Black Friday.

Cats urinate more frequently in darker environments.

Hawaiian script has only 12 letters.

There is a type of oyster near the Caribbean Sea that climbs on oyster beds.

Some insects have hairy eyes.

The world's oldest goldfish is 41 years old and its name is Fred.

Giraffes can't cough

An oyster can change its sex from male to female, and it can change its sex several more times during its lifetime.

A normal person's eye muscles move an average of 10,000 to 15,000 times a day.

Dairy cows can produce more milk when they listen to music.

Actually, hippos can run faster than humans.

The original meaning of "samba" in samba dance is probably rubbing our belly buttons together.

Male praying mantises cannot mate while their heads are still attached to their bodies. Therefore, female praying mantises must cut off the male's head before mating.

'Sixth Sick Sheik's Sixth Sheep's Sick' is one of the most difficult sentences to pronounce in English.

The most powerful and resilient muscle in the human body is actually the tongue.

Fish cannot stick out their tongues