Do porcupines actually shoot quills at predators?
Porcupine quills are controlled by muscles and are released instantly when they come into contact with another object.
Answered by Rosslynn F. -
About Muscles
There are over 600 muscles in the body. They do everything from pumping blood throughout your body to helping you lift heavy objects. You control some of your muscles, while others (like your heart) do their jobs without your even thinking about them at all. Muscles are the tissues in the body that contract and affect the movement of and within the body. Muscle tissue is classified as striated, smooth, or cardiac, according to its structure and function.
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