---
title: "Szczur wędrowny"
description: "Rattus norvegicus — Ssaki. The brown rat, also known as the common rat, street rat, sewer rat, wharf rat, Hanover rat, Norway rat and Norwegian rat, is a widespread, common species of rat."
canonical: https://animalchecklist.com/pl/animal/brown-rat
last_updated: 2026-09-20
---

# Szczur wędrowny

> Rattus norvegicus — Ssaki. The brown rat, also known as the common rat, street rat, sewer rat, wharf rat, Hanover rat, Norway rat and Norwegian rat, is a widespread, common species of rat.

- Scientific name: *Rattus norvegicus*
- Category: `mammals` (Ssaki)
- Habitats: `urban` (Miasta i ogrody)
- iNaturalist observations: 37321
- Wikidata: [Q184224](https://www.wikidata.org/wiki/Q184224)
- iNaturalist taxon: [44576](https://www.inaturalist.org/taxa/44576)

## Names

- en: Brown Rat
- de: Wanderratte
- es: Rata gris asiática
- fr: Rat surmulot
- it: Ratto grigio
- nl: Bruine rat
- pt: Rato-castanho
- pl: Szczur wędrowny

## Countries with the most observations

US (7086), GB (4209), RU (2563), CA (1478), DE (1134), FR (1064), IT (665), NZ (629), ES (572), AU (458), PT (442), MX (302)

## Summary

The brown rat, also known as the common rat, street rat, sewer rat, wharf rat, Hanover rat, Norway rat and Norwegian rat, is a widespread, common species of rat. One of the largest muroids, it is a brown or grey rodent with a body length of up to 28 cm (11 in) long, and a tail slightly shorter than that. It weighs between 140 and 500 g. Thought to have originated in northern China and neighbouring areas, it has now spread to all continents except Antarctica, and is the dominant rat in Europe and much of North America, having become naturalised across the world. With rare exceptions, the…

Text: Wikipedia (en), CC BY-SA 4.0 — https://en.wikipedia.org/wiki/Brown_rat

## Photo

![Szczur wędrowny](https://animalchecklist.com/img/animals/brown-rat/medium.jpg)

Photo: Quillipede · CC0 · inaturalist — https://www.inaturalist.org/observations/257944939

## Machine access

`GET https://animalchecklist.com/api/v1/animals/brown-rat?lang=pl` — see [openapi.json](https://animalchecklist.com/openapi.json).