Cats recognise the voice of their owner, but never evolved to care.
22
In Australia, there are spiders big enough to eat snakes.
20
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Queen ants have one of the longest life-spans of any known insect - typically up to 30 years. Western harvester ant queens can live up to 40 years!
2
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