Brown rats are larger and more aggressive than black rats - and they want to be close to human populations, said Matthew Frye, a researcher and community educator with the New York State ...

Only five black rat specimens were identified from samples after 1760, and just two samples out of 108 showed black rats occuring after 1800. Meanwhile, brown rat samples proliferated over the ...

Today, both types of rats exist in North American cities, though brown rats are more prevalent. Some urban centers are especially overrun. New York City, for example, last year hired a "rat czar ...

Shipping networks across the Atlantic “essentially functioned as rat superhighways,” and one species took over the East Coast in only a matter of decades. Here’s how the lowly brown rat came ...

Shipping networks across the Atlantic “essentially functioned as rat superhighways,” and one species took over the East Coast in only a matter of decades. Here’s how the lowly brown rat came ...

Shipping networks across the Atlantic “essentially functioned as rat superhighways,” and one species quickly took over. Here’s how the lowly brown rat came to lead the pack.

By LAURA UNGAR | AP Science Writer. Brown rats are the undisputed winners of the real rat race. New research suggests that they crawled off ships arriving in North America earlier than previously ...

Shipping networks across the Atlantic “essentially functioned as rat superhighways,” and one species quickly took over. Here’s how the lowly brown rat came to lead the pack.