Condoms were originally made of animal intestines or linen.
347
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Squirrels forget where they hide about half of their nuts.
698
Only 3% of bird species have penises.
0
The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12