Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
9
The colossal squid has the largest eyes in the world.
4
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
Sheep, goats, octopuses, and toads have rectangular pupils.
7
The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
When cats are happy, they may squeeze their eyes shut.
10