https://www.helsinki.fi/en/projects/urban-rats/brown-rat-an-urban-dweller
Brown rat - an urban dweller | Urban Rats | University of Helsinki
Brown rat (Rattus norvegicus) is the rat species common in cities all over the world.
brown ratuniversity ofurbandwellerrats
https://canalrivertrust.org.uk/things-to-do/canal-and-river-wildlife/a-spotters-guide-to-waterway-wildlife/brown-rat
Brown rat | Canal wildlife
Intelligent and highly adaptable, these resourceful characters are happy in almost any habitat.
brown ratcanalwildlife
https://australian.museum/learn/animals/mammals/brown-rat/
Brown Rat - The Australian Museum
The Brown Rat is an introduced rodent.
brown ratthe australianmuseum