<Tr> <Td_colspan="2"> <P> Hystricidae (Old World porcupines) Erethizontidae (New World porcupines) </P> </Td> </Tr> <P> Hystricidae (Old World porcupines) Erethizontidae (New World porcupines) </P> <P> Porcupines are rodents with a coat of sharp spines, or quills, that protect against predators . The term covers two families of animals, the Old World porcupines of family Hystricidae, and the New World porcupines of family Erethizontidae . Both families belong to the infraorder Hystricognathi within the profoundly diverse order Rodentia and display superficially similar coats of quills: despite this, the two groups are distinct from each other and are not closely related to each other within the Hystricognathi . </P> <P> The Old World porcupines live in southern Europe, Asia (western and southern), and most of Africa . They are large, terrestrial, and strictly nocturnal . In taxonomic terms, they form the family Hystricidae . </P>

Which animal has sharp quills on its body