Urban dwellers in Washington D.C., San Francisco, Toronto, New York City, and Amsterdam might have seen rats scurrying across their cities — and they're not imagining an influx. Rat populations ...

What’s new: Cities experiencing warmer temperatures, fewer green spaces and denser human populations are seeing a rise in rat numbers, a recent study shows. What the study says: Jonathan ...

Copyright 2025 The Associated Press. All Rights Reserved. A rat leaves its burrow at a park in New York City on Sept. 17, 2015. ( AP Photo/Mary Altaffer, File) A rat ...

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 ...

Norway and black rats (Rattus norvegicus and Rattus rattus) are ubiquitous urban pests, inhabiting cities worldwide. Despite their close association with people, urban rats remain difficult to control ...

In the first study of its kind, scientists found a correlation between climate change and a rise in urban rat populations. A rat scurries across West Broadway in New York City. A study looking at ...

Based on individual trends within cities, Washington was by far the leader in rat increases, followed by San Francisco, Toronto, New York City and Amsterdam. NBC Universal, Inc. Rat infestation in ...

WASHINGTON (AP) — Rat infestation in many world cities appears to be soaring, especially in Washington, and a new study blames warming temperatures, urbanization and other human actions.

Urban dwellers in Washington D.C., San Francisco, Toronto, New York City, and Amsterdam might have seen rats scurrying across their cities — and they're not imagining an influx. Rat populations ...

There’s a saying that in a big city you are never more than six feet away from a rat. It’s an urban myth, but scientists are warning cities across the globe are becoming far rattier ...

A new study reveals that rat infestations in many cities worldwide are on the rise, with Washington, D.C. emerging as the biggest hotspot. The study, which was focused on rat sighting reports from 16 ...

These elements complement and conflict with each other. The year 2025 belongs to the snake, but if you were born in the Year of the Rat, here’s everything you need to know and more: 1.