<Tr> <Td_colspan="2"> Bushy - tailed woodrat (Neotoma cinerea) </Td> </Tr> <Tr> <Th_colspan="2"> Scientific classification </Th> </Tr> <Tr> <Td> Kingdom: </Td> <Td> Animalia </Td> </Tr> <Tr> <Td> Phylum: </Td> <Td> Chordata </Td> </Tr>

Where does the term pack rat come from