The hedgehog relies for defence on its protective spines, rolling itself into a ball in a similar fashion to a [[pangolin]] or [[armadillo]] when threatened. This tactic, while effective against many predators, is of little use against motor vehicles, and many hedgehogs are killed on roads every year. The squashed-hedgehog has become a much more common sight as they increasingly move into urban areas in search of the abundant supply of discarded food, much like seagulls, foxes and rats. [[Badger]]s have been observed to drop them in water to induce them to unroll. Unlike those of the [[porcupine]], hedgehog spines do not detach easily, and rarely used aggressively. The spines are made of [[keratin]] and are not barbed or poisonous. | The hedgehog relies for defence on its protective spines, rolling itself into a ball in a similar fashion to a [[pangolin]] or [[armadillo]] when threatened. This tactic, while effective against many predators, is of little use against motor vehicles, and many hedgehogs are killed on roads every year. The squashed-hedgehog has become a much more common sight as they increasingly move into urban areas in search of the abundant supply of discarded food, much like seagulls, foxes and rats. [[Badger]]s have been observed to drop them in water to induce them to unroll. Unlike those of the [[porcupine]], hedgehog spines do not detach easily, and rarely used aggressively. The spines are made of [[keratin]] and are not barbed or poisonous. |