Cats recognise the voice of their owner, but never evolved to care.
22
The octopus does not have a blind spot.
273
A puppy is born blind, deaf, and toothless.
16
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
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492