Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12
You forget 90% of your dreams.
256
Cows can sleep standing up, but they can only dream lying down.
745
The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
21
Your thumb is about the same size as your nose.
124