pack rat

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A person who hoards objects of little worth—e.g., string, old newspapers, etc.—or sentimental value. The pack rat mentality is typical of obsessive-compulsive disorder

pack rat

Psychiatry A person who hoards objects of little worth–eg, string, old newspapers, etc–and lacking sentimental value; the PR mentality is typical of OCD. Cf Obsessive-compulsive disorder.
References in periodicals archive ?
Kerr: Short Report: A Disseminated Infection of Leishmania Mexicana in an Eastern Wood Rat, Neotoma floridana, Collected in Texas, 2003
pestis isolates obtained from the same wood rat fleas collected on the couple's property in July and November.
Flannery (1967) applied the Difference of Proportions test to the data for the cotton rat, kangaroo rat, and deer mouse, but did not apply it to the data for the wood rat, spiny mouse, harvest mouse, and pygmy mouse.
The saguaro cactus arm is a great perch for spying on enemies or finding prey such as the wood rat below.
Experimental infection of dusky-footed wood rats (Neotoma fuscipes) with Ehrlichia phagocytophila sensu lato.
-- The catch of small mammals in the pine woods comprised one eastern wood rat, one deer mouse and one white-footed mouse.
penicillatus Desert pocket mouse Subtotal Muridae Neotoma albigula White-throated wood rat Onychomys torridus Southern grasshopper mouse Peromyscus spp.
Species showing territorial behavior (e.g., Merriam's kangaroo rat [Figure 3A] and the white-throated wood rat [Figure 3C]) had higher ratios of residents to immigrants than species without strongly defended territories.
The architecture of the Porcupine's digestive system is well suited to break down and process tree leaves and bark a trait shared only with a few species of North American rodents, including wood rats (Neotoma spp.; Dearing and others 2005) and tree voles (Aborimus spp.).
Pack rats (also known as wood rats or trade rats) had filled every nook and cranny with debris of all kinds.