This article is from the WSSF 2016 AFRMA Rat & Mouse Tales news-magazine.
In a study done in Baltimore, MD, scientists from the Johns Hopkins Bloomberg School of Public
Health, found that wild Norway rats (Rattus norvegicus) form communities of about 11 city blocks that are further
divided into smaller neighborhoods about the size of an average alley. Rats in these
neighborhoods rarely ventured more
than a city block, but stayed close to their homes where they spend most of their lives. The rats would, however, travel
up to 7 miles to repopulate abandoned areas.
City Rats Are Loyal To Their
Neighborhoods on ScienceDaily.