Rats: Observations on the History and Habitat of the City’s Most Unwanted Inhabitants , by Robert Sullivan. Bloomsbury, 242 pages, $23.95. Robert Sullivan’s Rats is a strange book. The … ...

Rats exist on every continent except Antarctica, but where else do they enjoy al fresco dining at sidewalk cafes?

It diverged from a close relative, the Norway brown rat (Rattus norvegicus), only around 2.6 million years ago. The team found that the Christmas Island rat genome mapped to about 95 percent of ...

Stereotypical rats are found in the genus Rattus, which includes some of the better-known species of rat, such as the brown rat (Rattus norvegicus) and the black rat (Rattus rattus). The term rat ...

City dwellers’ favorite scruffy friend, the brown rat (Rattus norvegicus), causes $19 billion dollars in damages around the world every year.Yet for an animal that is responsible for so much ...

Brown rat (Rattus norvegicus) is the rat species common in cities all over the world. While previously European cities were inhabited by black rats (Rattus rattus), nowadays they are rare, having lost ...

The two rat species that have long, intimate histories with humankind are the brown rat (Rattus norvegicus) and the black rat (Rattus rattus). Modern pet rats are descendants of wild brown rats, which ...

The timing coincides with the introduction of brown rats (Rattus norvegicus), which spread from Asia and outcompeted black rats almost as soon as they set their little clawed feet on the European ...