Polar bear fur is not white, it's clear.
74
Spiders have transparent blood.
56
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
On average, there's 300 billion neurons in the octopus brain.
129
A species of earthworm in Australia grows up to 10 feet in length.
10
Over 10,000 birds a year die from smashing into windows.
47