1. Hedgehogs got their name from their preferred habitat, garden hedges and the pig like grunts they make.
2. Hedgehogs are nocturnal coming out at night time and spending the days sleeping in a nest under bushes or thick shrubs.
3. Hedgehogs coats are thick and spikey providing them with a formidable defence against predators such as the fox.
4. Hedgehogs rely on hearing and smell because they have very poor eyesight.
5. Each hedgehog has between 5000 and 7000 quills. Each quill lasts a year then drops out and a new one grows.
6. When exposed to pungent smells or tastes hedgehogs exhibit a behaviour called self anoiting in which they use their tongues to rub frothy saliva all over their quills.
7. Unlike porcupine quills, hedgehog quills are not barbed and they are not poisonous.
8. There are 17 different species of hedgehogs, none of which are native to America.
9. Hedgehogs are illegal in Maine, Arizona, California, Georgia, Pennsylvania, Hawaii and New york city.
10. A group of hedgehogs is called an Array