A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
The reindeer is the only mammal that can see UV light.
17
A tortoise named Adwaita lived to 255 years old. To put it into perspective, he was born before the United States of America existed and his death was announced on CNN (1750-2006).
12
Honeypot ants are a unique insect that use their own bodies as living storage pots of honey.
4
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
Dolphins have names for one another.
18
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212