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.


small, furred mammal; members of the family Murinae (Old World rats) and the family Cricetinae (New World rats) both of the order Rodentia. They are omnivorous, nocturnal, do not hibernate and live commensally with humans. They have pointed snouts, a long, thin, almost hairless tail. Only some of the members of the rat and allied groups are listed below.

rat bite fever
black rat
Old World rat with long tail and ears. Called also Rattus rattus.
brown rat
Old World rat with short tail and ears. Called also Rattus norvegicus.
rat flea
kangaroo rat
a solitary rodent with long legs with which it progresses in leaps like a kangaroo and uses its large tail as a balancer. Called also Dipodomys deserti.
rat leprosy
a chronic, largely cutaneous disease of rats caused by Mycobacterium lepraemurium and characterized by subcutaneous granuloma and similar involvement of superficial lymph nodes, containing large numbers of acid-fast organisms. The disease has little similarity to nor any relationship with human leprosy. See also feline leprosy.
Long-Evans rat
laboratory rat with brown or black head and shoulders.
musk rat
properly called muskrat and is really a water vole. Called also Ondatra zibethica.
pack rat
New World rat-like creature. Called also Neotoma spp., wood rat.
sand rat
see gerbil.
Sprague-Dawley rat
albino laboratory rat.
rat tooth, teeth
describes the type of points on surgical instruments with a single point on one side which interlocks with two points on the other side.
water rat
properly called water vole; in Australia, water rat is a native rodent Hydromys chrysogaster.
white rat
common laboratory rat.
Wistar rat
a white laboratory rat.
References in periodicals archive ?
black-tailed jackrabbits (Lepus californicus) and desert cottontails (Sylvilagus audubonii), were reported as the main prey, whereas rodents such as packrats (Neotoma leucodon), ground squirrels (Spermophilus), and deer mice (Peromyscus) , were reported as secondary prey (Delibes et al.
Some packrats like variety, while others specialize.
Two recent contributions have actually searched for pseudoscorpions in different parts of the packrat nests (Montiel-Parra & Villegas-Guzman, 1997; and Villegas-Guzman 2003).
Either interpretation appears consistent with the packrat midden record, the faunal record, as well as data from Mead et al.
Melfunny lets packrats know that he too suffers from the pesky chants of his co-workers, such as "I never knew you were born in lower Slobovia" and "Hey buddy, how are things up there on Mount Trashmore?
Maximizer, Advantage, Lotus Organizer, PackRat, Commence, ECCO & GoldMine.
They examine cultural blind spots in the case of the ring-billed gull in Toronto, wolves, snakes, the Mormon cricket, the coyote, prairie dogs, packrats, flying carp, starlings, bugs, the cat that kills the bird, bullhead catfish, rats and mice, and the fear and loathing in nature that haunts all of us when dealing with trash animals.
Both my father and grandfather were packrats," Radke says.
The fact that the fabric shed kept all these things (stored higgledy-piggledy on makeshift shelves and racks built over and around boxes and cans of every size and stripe) high and dry, only made it more hospitable to the legions of mice and packrats that took up residence almost as soon as the shed was erected.
But if the shoebox is becoming an endangered species, where will the packrats of the world keep their photos?
Packrats will stow their old sets in the attic, gamers will use them as an extra screen and philanthropists will donate them to charity.
We're all packrats, so we had kept all the furniture,'' he says.