Brown rat
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| phylum | Chordata | The brown rat, also referred to as common rat, is one of the best known and most common rats. One of the largest muroids, it is a brown or grey rodent with a body up to 25 cm (10 in) long, and a similar tail length. Thought to have originated in northern China, this rodent has now spread to all continents except Antarctica, and is the dominant rat in Europe and much of North America—making it by at least this particular definition the most successful mammal on the planet after humans. With rare exceptions, the brown rat lives wherever humans live, particularly in urban areas.
For more information, visit the Wikipedia entry. Get back to Old World rats and mice |
| class | Mammalia | |
| infraclass | Eutheria | |
| order | Rodentia | |
| family | Muridae | |
| genus | Rattus | |
| species | R. norvegicus |
