A few facts from ScienceKids.com:
- There are over 1 billion sheep in the world.
- Sheep have a field of vision of around 300 degrees, allowing them to see behind themselves without having to turn their head.
- The digestive system of sheep features four chambers which help break down what they eat.
“A 2002 Oxford study found that insomniacs who counted imaginary ewes actually took longer to nod off. ” Mentalfloss.com