Rat
Rattus
Living individuals or members of this group exist today. This does not mean they are safe from extinction.
Rats include several rodent species. This account describes the brown rat (Rattus norvegicus), an adaptable omnivore that has spread widely alongside people.

Representative species: Rattus norvegicus.
At a glance
- Location
- Brown rats originated in Asia and now occur across much of the world. Buildings, ports, fields and waterways provide food and shelter.
- Habitat
- Towns and cities, Grassland
- Diet
- Omnivore
- Food
- Discarded food, seeds and other plant material, and small animals are eaten.
Classification
- Common name
- Rat
- Browse group
- Mammals
- Scientific name or taxon
- Rattus
- Source classification
- Mammalia
Three things to know
- It is an accomplished swimmer.
- Its tail is shorter than its head and body combined.
- It learns routes through burrow systems.
Habitat and range
Brown rats originated in Asia and now occur across much of the world. Buildings, ports, fields and waterways provide food and shelter.
Appearance and adaptations
A robust body, blunt muzzle and sparsely haired tail distinguish the brown rat. Wild coats are usually brownish, while domestic forms vary.
Diet and behaviour
Discarded food, seeds and other plant material, and small animals are eaten. It often forages at dusk or during the night. Burrows and hidden nesting areas connect with learned routes to food supplies.
Sources
- Animal Diversity Web: Rattus norvegicus
- A–Z Animals: Rat · Directory entry
Explore mammals
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LCMammals
Brown rat
Rattus norvegicus
The brown rat is a large, burrowing rodent that lives wherever people live.
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