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 ?
Since he had started his job catching pack rats, he'd caught and released a dozen of the pesky rodents into the desert, away from houses.
Fendley, one of the board members, said that he has noticed an increase in boat sales in the past eight years at the Pack Rat Outdoor Center.
While hanging on to stuff longer is not a problem it becomes even more important for people to have systems in place to avoid the appearance of becoming a pack rat.
The Pack Rat is currently located in a 6,000-SF building that Crook owns at the corner of Township Road and Green Acres Road.
The woodsy folks looking at canoes outside the Pack Rat Outdoor Center in Fayetteville on a recent Sunday afternoon may not have noticed the richest woman in the world sitting under a shade tree.
You might see the nest of a pack rat, or learn what plant makes California's hills golden, why you don't hear many birds sing in a redwood forest, and how a manzanita tree protects its broad evergreen leaves from the sun's heat.
If you're a pack rat who never throws anything away, or you have trouble finding things, chances are clutter has taken over your home.
But the garage has always been a conflict for us because he's a pack rat - and I'm someone who likes to get rid of stuff.
There's a pack rat with three vacant, junk-filled houses over on upscale Greenbush Avenue in Sherman Oaks, where you can't touch a home these days for under a half-million bucks.
And, for the tykes, Magellan's has the Children's Pack Rat Kit ($19.
I swear, on my fiberglass male torso for displaying swim trunks in a men's store window, that I'm not a pack rat.
Once you become a scrapbooker, you become an organized pack rat - with the emphasis on ``organized.