What material properties does a hedgehogs spines have?

Hedgehog spines are composed primarily of keratin, a resilient protein that provides strength and flexibility. The spines are rigid yet lightweight, allowing them to serve as both a defense mechanism and a means of camouflage. Additionally, the structure of the spines enables them to absorb impact, reducing injury during encounters with predators. Their pointed tips and interlocking arrangement enhance their effectiveness as a protective barrier.