When you think of a hedgehog, you might imagine them using their unique defense mechanism: curling into a tight, spiky ball.

Whenever hedgehogs are frightened, they transform into a ball of spikes. Their quills will flatten when they’re calm, which ...

An adult hedgehog has up to 7,000 spines, which it can raise when it feels threatened. Each spine lasts about a year before it drops out, to be replaced by a shiny new spike. Hedgehogs have an ...

Now you need to give your hedgehogs some spikes! Ask your grown-up helper to use scissors to snip deep cuts along the back of each roll. Then, pull up the spikes. Give your hedgehog two raisin ...

It comes from the story of the hedgehog who outwits the fox by a single defensive manoeuvre – curling into a ball with spikes protruding. The philosopher Isaiah Berlin later used the dichotomy ...