Hedgehogs have several defense mechanisms to protect themselves against predators. Their first line of defense is their spines. When threatened, a hedgehog will roll into a tight ball, presenting a barrier of sharp spines to deter predators. These spines are stiff, hollow hairs made of keratin and can easily penetrate the skin of a predator. Additionally, hedgehogs may hiss, click, or even jump in an attempt to ward off threats. If these tactics fail, hedgehogs can also release a foul-smelling odor from their anal glands, which can deter predators. Overall, hedgehogs have evolved effective strategies to defend themselves in the wild.

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Topics covered in this question:

Hedgehog Behavior Hedgehog Defense Mechanisms Predator Avoidance