Mountain Brushtail Possum: Identification, Habitat & Removal in Sydney
The Mountain Brushtail Possum (Trichosurus cunninghami) is a lesser-known possum species occasionally encountered in bush-adjacent areas of Sydney. Larger and more robust than its common counterpart, this possum prefers forested environments but may move into suburban spaces when natural habitats are disturbed.
If you live near national parks, bushland reserves, or on the city’s outer fringes, you may be more likely to encounter this elusive species. This guide explains how to identify the mountain brushtail possum, their behaviour, and what to do if they take shelter in or near your home.
Quick Facts About the Mountain Brushtail Possum
- Scientific name: Trichosurus cunninghami
- Size: Body length 35–60 cm; tail around 30 cm
- Weight: Up to 4.5–5 kg (larger than common brushtail)
- Habitat: Eucalypt forests, bush reserves, and tree hollows
- Behaviour: Solitary, nocturnal, highly territorial
- Status: Protected under NSW wildlife laws
How to Identify a Mountain Brushtail Possum
The mountain brushtail possum looks similar to the more common brushtail species but has some distinct characteristics. These differences are important for proper identification, especially when planning safe removal or proofing.
Identification Features:
- Larger and more muscular build than the common brushtail
- Dark grey to black fur with white markings behind the eyes
- Shorter, bushy tail compared to other possums
- Less vocal, but capable of loud growling when threatened
If you notice a large possum that appears more robust and is active in bushland surrounding your property, it may be a mountain brushtail. For comparison, visit our page on the Common Brushtail Possum.
Where Are Mountain Brushtail Possums Found?
Mountain brushtails are typically found in high-elevation forests and bushland environments. However, habitat loss and urban expansion have pushed them closer to residential zones on the fringes of Sydney. Suburbs bordering reserves such as the Blue Mountains, Ku-ring-gai Chase National Park, and parts of the Hills District are known to report occasional sightings.
They’re less common in densely populated inner suburbs but may venture in during mating seasons or when food becomes scarce.
They often use their sharp claws to scale fences, trees, and even brick walls. Our guide to possums’ claws and teeth anatomy explains why they’re so effective at accessing homes.
Behaviour and Lifestyle
Like other possum species, mountain brushtails are nocturnal and arboreal — spending most of their time in trees. They rely on tree hollows to sleep during the day and will only descend to the ground to travel short distances or find food.
Behavioural traits include:
- Foraging for leaves, bark, flowers, and fruits at night
- Marking territory with scent and vocalisations
- Displaying aggression when cornered or when defending nesting sites
Unlike ringtail possums, which live in social groups, mountain brushtails are solitary and highly territorial. For more on how possums mark their territory, visit our guide on Possum Territory and Scent Marking.
Do Mountain Brushtail Possums Enter Roofs?
Yes — although they prefer natural hollows in trees, mountain brushtails may seek shelter in roofs, garages, or sheds when:
- Tree cover has been removed due to construction
- There’s an easy entry point into a warm ceiling space
- Food sources are available in nearby gardens
If a possum of considerable size has entered your roof and is making occasional, low-frequency noises (growls or hissing), it could be a mountain brushtail.
Signs You May Have One on Your Property
Look for these signs:
- Scratch or claw marks on trees, fences, or sheds
- Large droppings near garden edges or roof cavities
- Deep growls or huffs at night
- Entry holes in roofing with nesting materials inside
Compare droppings and tracks using our guides on Identifying Possum Droppings and Possum Tracks and Footprints.
Legal Considerations for Removal
All possum species in New South Wales, including the mountain brushtail, are legally protected. Removal and handling can only be carried out by licensed wildlife handlers. It is illegal to trap, kill, or relocate a possum without a valid license from the Department of Planning and Environment.
Learn more on our Possum Removal Laws in NSW page.
How We Handle Mountain Brushtail Possum Removal
At Possum Ranger, we use humane, legal methods to manage mountain brushtail possums in suburban and semi-rural areas.
Our process includes:
- Site inspection – We identify the species and confirm signs of occupation.
- Species-safe removal – If the possum is inside a structure, we use passive one-way doors to allow it to exit safely.
- Habitat restoration advice – We advise on how to deter future entry and encourage return to native bushland.
We prioritise non-disruption and strictly follow all legal and environmental guidelines. For urgent issues, contact our Emergency Possum Removal service.
Can I Remove One Myself?
No — mountain brushtail possums must not be handled or relocated without a license. Doing so risks:
- Harming a protected species
- Injuring yourself — mountain brushtails can be aggressive if threatened
- Receiving fines or legal penalties
Always call a licensed expert. Read our DIY Possum Removal guide for more on the risks and restrictions.
Prevention Tips for Bushland Properties
If you live near Sydney bushland or national parks, here are ways to reduce the chance of possum intrusion:
- Seal off roof gaps, vents, and eaves with possum-proof mesh
- Trim tree limbs that overhang the roof
- Use motion-activated lights or sprinklers in the garden
- Avoid leaving pet food or compost uncovered overnight
Visit our Possum Proofing page for a complete prevention checklist.
Book a Free Possum Inspection
If you suspect a mountain brushtail possum has entered your property, contact Possum Ranger for a free site assessment. We provide fast, legal possum removal services throughout Sydney and surrounding bushland areas.
Book your free inspection online or call us directly on 0468 166 733.
