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- Porcupine quills are hollow hairs made of hardened keratin1234. They are coated with the protein keratin, which makes them hard and sharp3. Each porcupine has about 30,000 quills over his body and tail34. The quills have little barbs that grab onto whatever they touch3. Quills are soft when a porcupine is born, but harden within a few hours of birth to form a shell of protection1. Quills are not thrown or shot, as popularly conceived. Because quills are so lightly attached, they come off easily when a predator encounters them4.Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.These quills are hairs ending in barbs that cover the whole body besides the stomach. The keratin that forms human fingernails and hair also make up these tiny defense mechanisms. Quills are soft when a porcupine is born, but harden within a few hours of birth to form this shell of protection.blog.nhstateparks.org/porcupines-the-skills-of-quills/Porcupine quills are hollow hairs made of hardened keratin that look like hollow feathers. Keratin is the same material that your fingernails are made of and the same as porcupines’ claws. They have a saw-toothed feathery barb at the end of the quill that makes it stuck in you if you should happen to get quilled.naturenibble.com/do-porcupines-shoot-their-quills/Quills are hairs that are coated with the protein keratin. This makes them them hard and sharp. Each porcupine has about 30,000 quills over his body and tail – that’s more than 100 quills per square inch. The quills have little barbs that grab onto whatever they touch.www.dogsnaturallymagazine.com/porcupine-quills …The porcupine's most famous feature—the quill—is hollow, 2 to 3 inches (5 to 7 centimeters) in length, and lightly attached to the porcupine's skin. Porcupines are covered in about 30,000 quills. Quills are not thrown or shot, as popularly conceived. Because quills are so lightly attached, they come off easily when a predator encounters them.nationalzoo.si.edu/animals/north-american-porcupine
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