That’s according to this article which suggests they could be extinct within 15 years. They have suffered a dramatic decline over the past century and it is estimated there are now around one million hedgehogs in Britain, a decline of about 25% over ten years. Reasons for the decline include a reduction in habitat in the countryside and the use of pesticides which eliminate much of their food sources such as caterpillars and beetles. Hedgehogs are also faced with numerous dangers in residential areas such as rat poison, strimming and mowing as well as around 50,000 hedgehogs being run down by motorists every year. To help hedgehogs you can provide food and water, use wildlife friendly slug pellets and remove trailing garden netting.