When dragonflies mate, their tails form a love heart.
22
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
When cats are happy, they may squeeze their eyes shut.
10
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10