Hedgehogs have several defense mechanisms to protect themselves from predators. Their primary defense is their quills, which are sharp hollow hairs made stiff with keratin. When threatened, a hedgehog will roll into a tight ball, covering its vulnerable head and limbs with its quills. This makes it challenging for predators to attack them. Hedgehogs also exhibit a behavior called 'self-anointing,' where they spread foamy saliva on their quills, possibly to deter predators with a strong taste or smell. Additionally, hedgehogs can make a hissing sound, puff themselves up, or even click their teeth to warn off predators. These defense mechanisms combined make hedgehogs a formidable prey to tackle.

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Topics covered in this question:

Hedgehog Behavior Hedgehog Defense Mechanisms Hedgehog Protection Hedgehog Quills