We have lost 33% of our UK hedgehog population in the last ten years!
Our modern day hedgehog has no known living relatives, having derived from an ancient family dating back as far as 15 million years.
There are 15 species of hedgehog throughout Asia, Africa, China and Europe (also introduced to New Zealand).
A full grown hedgehog has between 5000-7000 spines and will usually be between 20-30cms long and up to 1kg in weight.
Hedgehogs have unusually short necks which probably facilitates their main defence mechanism of rolling into a small tight ball to protect their vulnerable underbelly.
Hedgehogs can run as fast as a human can walk! This is thanks to their relatively long legs - about 10cm.
A hedgehog can travel up to 3kms each night in its search for food (or a mate).
Self-anointing is something only hedgehogs do and which sees them produce large amounts of frothy saliva which they spread over their spines. This is usually triggered by unfamiliary tastes or smells.
The gestation period for a hedgehog is 32 days and the babies are called hoglets. They are born in litters ranging from 1 to 11 and only remain with their mothers for up to seven weeks before 'going it alone'.
If a young hedgehog survives the dangers of its first year and hibernation, it can expect to live for up to 6 years, maybe more.