Greyhounds have the best eyesight of any breed of dog.
28
A queen bee uses her stinger only to sting another queen bee.
39
It's possible to lead a cow upstairs, but not downstairs.
50
A duck's quack doesn't echo, and no one knows why.
173
All the swans in England are property of the Queen.
36
Only 3% of bird species have penises.
0
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6