The oldest creature ever found was Ming the clam at an admirable 507 years old.
16
On some poorly researched trivia lists it is stated as a fact that a pregnant goldfish is called a twit. This is not true as goldfish lay eggs.
71
In Australia, there are spiders big enough to eat snakes.
20
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
George was the world's largest dog who weighed 233 pounds, stood at 43 inches tall from paw to shoulder, and ate 180 pounds of food a month.
7
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