What is the main defense mechanism of the hedgehog?
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The main defense mechanism of the hedgehog is its spines. When threatened, a hedgehog rolls into a tight ball, exposing its spines and protecting its vulnerable underside from predators.
When threatened, the hedgehog raises its quills upright in a crisscross pattern, making its body pointy and sharp. It uses its belly muscles, back muscles, and extra skin to tuck in its head, legs, and tail to curl into a complete ball, protecting its soft belly. The solid ball of spikes is hard for predators to open.