- packrat - a collector of miscellaneous useless objects
--1 is a kind of hoarder; collector, gatherer, accumulator
- packrat, pack rat, trade rat, bushytail woodrat, Neotoma cinerea - any of several bushy-tailed rodents of the genus Neotoma of western North America; hoards food and other objects
--2 is a kind of wood rat, wood-rat
--2 is a member of Neotoma, genus Neotoma
--2 has particulars: dusky-footed woodrat, Neotoma fuscipes