A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
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
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
A puppy is born blind, deaf, and toothless.
16
There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9
The head of a jellyfish is called the "Bell."
6
Gorillas can catch human colds and other illnesses.
205