The spikes on a hedgehog are similar to the upward spikes on a seismic graph measuring earthquakes. The population of hedgehogs is roughly 522,000. Hedgehogs normally hibernate from December to March. The population of hedgehogs in rural areas has dropped 50ince the year 2000. Did you know there is such thing as ‘hedgehog geometry’, I didn’t either! The hedgehog in the photo represents the term hedgehog geometry. The spikes on the hedgehog are like the spikes in hedgehog geometry.
