Early American humans hunted car-size armadillos and used their shells for houses.
12
A 42-foot sperm whale has about 7 tons of oil in it.
209
A giraffe's kick is so powerful that it can decapitate a lion.
216
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
82
By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
9
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Penguins have a gland above their eye that turns saltwater into freshwater.
12