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Choose a Page:How do bats locate their food?Which is the fastest mammal?What is the smallest land mammal?How does a camel survive in the de...Why does a zebra have stripes?How can you tell a monkey from an ape?Which animal is called the 'walkin...What is a rhino's horn made of?Which animal is called the river h...How does a mongoose defeat a cobra?How does a lion catch its prey?How do kangaroos and wallabies run?*How does the porcupine protect itself?*What is the difference between the... How does the porcupine protect itself? The sharp, spiny quills of a porcupine are really just specially strengthened hairs. In some species, such as the African porcupine, they can reach a length of 50 centimetres. The quills are so strong that they can cause painful injuries if they are jabbed into a would-be attacker.   Previous: Back Book: Best Ever Q&A Section: Nature Chapter: Land Mammals