Roof Rat (Black Rat)
Rattus rattus
An agile climbing rat that nests in roof voids, trees and dense vegetation. The rat most often heard in ceilings in Brisbane and other coastal cities.
- Tail
- Longer than body
- Nests
- High: roofs and trees
- Droppings
- 10–12 mm
- Climbs
- Expertly
Questions about the Roof Rat
How to identify a Roof Rat
Identification
- Slender body with pointed snout and large, thin ears.
- Tail longer than head and body combined.
- Colour ranges from black to grey-brown with a paler belly.
- Droppings about 10–12 mm, spindle-shaped.
Where it lives
- Roof voids, wall cavities, palms, bamboo, vines and fruit trees.
Behaviour
- Runs along fences, power lines and branches.
- Wary of new objects; may avoid traps for days.
Why it matters
The usual cause of rats in the roof.
Chews wiring and insulation in ceiling spaces.
Commonly confused with
Rat guides
How to Pest-Proof Your Home
A practical, room-by-room approach to reducing pests without relying on chemicals: remove what attracts them, close the ways in, and make your property less comfortable for them.
GuideCommon Brisbane Household Pests
A Brisbane-specific overview of the pests residents meet most often, when they are active, and what the subtropical climate, storms, creeks and Queenslander homes mean for pest pressure.
GuidePest Prevention Checklist
A printable seasonal checklist of simple, low-cost tasks that reduce pests around Australian homes, with the reason behind each step and extra lists for renters, apartment residents, pet owners and Queenslander owners.
Rats by location
More about rats
Rats
Introduced rodents that live alongside people, nest in roofs, walls and gardens and gnaw through building materials and wiring. Roof rats are the most common household rat in many Australian cities.
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Sources & further reading
- Australian Museum — insects and spiders — Australian Museum
- Queensland Health — mosquito-borne disease and environmental health — Queensland Health
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