Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
A cow produces around 200,000 glasses of milk in her lifetime.
373
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
Allegedly, Chrysippus, the Greek philosopher, died of laughter after getting his donkey drunk and watching it try to eat figs.
47
In 1918, a homing pigeon saved over 190 American soldiers by delivering a message to nearby support despite having been shot through the breast, blinded in one eye, covered in blood, and with a leg hanging on by just a tendon.
22
Rattlesnake mating sessions have been known to last more than 22 hours.
232