porcupine
The porcupine family is a family of rodents in the mammalian order Rodentia. Undergraduate is the largest rodent with a robust body, covered in round or flat spines throughout the body, and with spines or bristles on the tail. Eat plant roots, tender leaves, bamboo shoots, wild fruits, as well as corn, potatoes, fruits, etc. The spines on the bodies of porcupines have evolved over a long period of time. In order to avoid attacks from natural enemies and extinction, the fur on their bodies gradually turned into hard spines. Compared with other mammals with long spines, their spines are easy to fall off, but they quickly grow back.
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