An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
The oldest recorded elephant lived for 82 years.
213
There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
40
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
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
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492