There wasn't a single pony in the Pony Express, just horses!
57
Chained dogs are 3 times more likely to bite than unchained dogs.
34
A group of unicorns is called a blessing.
304
Crocodile babies don't have sex chromosomes; the temperature at which the egg develops determines gender.
45
Cats cannot taste sweet things.
22
The Giant South African Earthworm can grow up to 22 feet long and 1 inch in thick.
37
The elephant brain weighs about 6,000g.
274