Norway Rat Identification Melbourne
Identify Norway rats in Melbourne — appearance, behaviour, and control options.
Norway Rat in Melbourne — Quick Answer
The Norway rat is a large, ground-dwelling rodent commonly found in Melbourne suburbs. Adults measure 20–27 cm in body length with a thick, blunt snout and small ears. They nest in burrows along foundations, under decking, and in sewers. Norway rats cause significant property damage and carry diseases. T47 Pest Control provides targeted baiting and exclusion programs to eliminate Norway rat populations.
How to Identify Norway Rat
Size
20–27 cm body; 15–22 cm tail (shorter than body)
Colour
Brown-grey upper body with a lighter grey or white belly
Behaviour
Nocturnal, strong swimmer, cautious of new objects; nests underground
Habitat
Ground-level burrows near foundations, sewers, compost bins, subfloor areas
Look-Alikes & Confusion Notes
Sometimes confused with roof rats. Norway rats are stockier with smaller ears and a tail shorter than their body, whereas roof rats are sleeker with larger ears and a longer tail.
Risk & Urgency
High. Norway rats transmit leptospirosis, salmonella, and other diseases. They damage structures by gnawing through pipes, wiring, and timber. Large colonies can undermine foundations. Prompt treatment is essential.
Where Found in Melbourne
Norway rats are widespread across Melbourne, particularly in older suburbs with established sewer systems. They favour areas near waterways, commercial kitchens, and properties with accessible food waste.
What to Do Now
Secure waste bins with tight-fitting lids, remove pet food at night, and block entry points larger than 15 mm with cement or steel. Contact T47 Pest Control for professional baiting and exclusion to eliminate the colony.
Frequently Asked Questions
- Where do Norway rats nest?
- Norway rats dig burrows in soil alongside building foundations, under concrete slabs, near compost heaps, and along riverbanks. Indoors, they nest in wall cavities and subfloor areas.
- What damage can Norway rats cause?
- They gnaw through pipes, electrical wiring, and structural timbers. Their burrowing can undermine paths, driveways, and foundations. They contaminate stored food and spread disease through droppings and urine.