Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
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
A scorpion can hold its breath for up to 6 days.
19
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11
When dragonflies mate, their tails form a love heart.
22
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10