The common rat, Rattus norvegicus, often used as an experimental organism.
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Preliminary Survey of Ectoparasites and Associated Pathogens from Norway Rats in New York City.
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She screamed piercingly as a blackish-brown Norway rat tumbled out almost into her face.
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He is sometimes called the Norway Rat and sometimes the Wharf Rat and House Rat.
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Donor Lewis rats islets were transplanted under the kidney capsule in diabetic Brown Norway rats.
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Norway rats are an abundant synanthropic species in urban settings and serve as reservoirs for many pathogens.
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When he returned he opened the box only to find a nest of Norwegian rats in his beautiful drawings.
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At first I regarded him as merely an ordinary intrusive brown rat.
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Appearances were undoubtedly against the brown rat, but it knew something of tactics.
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As he crept beneath it, he heard the brown rat scream.
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The trek was headed by an old brown rat.
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If so, you don't know the cruel devil of perseverance that is the brown rat.
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How would you know what a wharf rat looks like?
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I told you, I wasn't wearing my spectacles and he looked just like a wharf rat runnin' through the kitchen.
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He couldn't tell the world that Mr. Wharf Rat was a thief.
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Sometimes these wharf rats are captured in the act, when fierce fights ensue.
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The Hannah was a river boat and not a dive for wharf rats.
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Up ahead, a few old wharf rats were playing pinochle on a bench.
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The soldiers called them " wharf rats," "sailors," "longshoremen," "cutthroats," and "gutter snipes."
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He is sometimes called the Norway Rat and sometimes the Wharf Rat and House Rat.
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He's worth half a dozen of these wharf rats.
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W'en we drop anchor, dere was some o' da meanes' lookin' wharf rats I evah see.
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Children scampered to and fro like wharf rats.
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I realize now that in those moments as we scurried aboard like wharf rats, we took wild chances.
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Two unusually big cats and two dogs all bound to kill rats were fighting these fierce wharf rats.
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Nearly two thirds of the boys have been boot-blacks, the remainder mostly what are technically known as ' wharf rats.'
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I wouldn't ask for anything better than a turn with these wharf rats if it weren't for the ladies.
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One doesn't expect to be driven from his ship by wharf rats, no matter how numerous they may be.