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In the U.S., the numbers of rats and mice used are not reported, but estimates range from around 11 million [4] to approximately 100 million. [5] In 2000, the Federal Research Division, Library of Congress, published the results of an analysis of its Rats/Mice/and Birds Database: Researchers, Breeders, Transporters, and Exhibitors.
Laboratory rats or lab rats are strains of the rat subspecies Rattus norvegicus domestica (Domestic Norwegian rat) which are bred and kept for scientific research. While less commonly used for research than laboratory mice , rats have served as an important animal model for research in psychology and biomedical science [ 1 ] , and "lab rat" is ...
Examples of applied research include testing disease treatments, breeding, defense research, and toxicology, including cosmetics testing. In education, animal testing is sometimes a component of biology or psychology courses. [3] Research using animal models has been central to most of the achievements of modern medicine.
Scientists have some good news for rats and some bad news for city dwellers. Rat populations are rising in cities including Washington, D.C., and San Francisco, reports a study released Friday ...
Technical reports are often prepared for sponsors of research projects. Another case where a technical report may be produced is when more information is produced for an academic paper than is acceptable or feasible to publish in a peer-reviewed publication; examples of this include in-depth experimental details, additional results, or the ...
A working rat is any rat which is trained for specific tasks as a working animal. In many cases, working rats are domesticated brown rats . However, other species, notably the Gambian pouched rat , have also been trained to assist humans.
The Story of Rats: Their Impact on Us, and Our Impact on Them. Allen & Unwin. ISBN 1-86508-519-7. Hendrickson, R. (1983). More Cunning than Man: A Complete History of the Rat and its Role in Civilization, Kensington Books. ISBN 1-57566-393-7. Hodgson, B. (1997). The Rat: A Perverse Miscellany. Ten Speed Press. ISBN 9780898159264; Langton, J ...
Individual rats would rarely eat except in the company of other rats. As a result extreme population densities developed in the pen adopted for eating, leaving the others with sparse populations. In the experiments in which the behavioral sink developed, infant mortality ran as high as 96 percent among the most disoriented groups in the population.