Honey never spoils. Archaeologists have found 3,000-year-old honey in Egyptian tombs that was still edible.
Octopuses have three hearts — two of them stop beating when the octopus swims, which is why they prefer crawling.
Bananas are botanically classified as berries. Strawberries, technically, are not.
A group of flamingos is called a "flamboyance."
Sharks are older than trees — sharks appeared roughly 400 million years ago, trees about 350 million years ago.
Wombats produce cube-shaped droppings, one of the few naturally cube-shaped things in the animal kingdom.
A day on Venus is longer than its year — it rotates so slowly that one full rotation takes longer than one trip around the sun.
Sea otters hold hands while sleeping so they don't drift apart from each other in the water.
The Eiffel Tower grows several inches taller in summer as its iron structure expands in the heat.
There are more possible unique chess games than there are atoms in the observable universe.
Your stomach lining replaces itself every few days — otherwise, stomach acid would digest the stomach itself.
The shortest recorded war in history, between Britain and Zanzibar in 1896, lasted well under an hour.
Cows form close friendships with other cows and show signs of stress when separated from them.
Antarctica is technically the world's largest desert — "desert" is defined by low precipitation, not heat.