Bats sleep 18-20 hours per day.
5
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
The cat brain weighs about 30g.
167
When dragonflies mate, their tails form a love heart.
22
A dairy cow can produce more milk when listening to music.
446