How to Tell Male and Female Possums Apart in Sydney
Spotting a possum in your garden or roof cavity might raise a few questions — and one of the most common is: what’s the difference between male vs female possums? Whether you’re observing their behaviour or dealing with a potential removal, understanding these differences can be useful and informative.
This article explores the main physical and behavioural traits that distinguish male from female possums, specifically focusing on Sydney’s most common species: the Common Brushtail and Ringtail Possum.
Do Male and Female Possums Look Different?
In many cases, yes — though it’s not always obvious from a distance. Possums are sexually dimorphic, which means males and females display different physical features.
1. Size
Male possums are generally larger and bulkier than females. In Brushtails, mature males can weigh up to 4.5 kg, while females are typically smaller and lighter.
2. Scent Glands
One of the easiest ways to identify a male is by the scent gland on his forehead. This gland often appears as a raised or stained patch and is used for marking territory and attracting mates.
Females lack this prominent gland, although both sexes participate in scent marking behaviours to varying degrees.
3. Pouch
Only female possums have a marsupial pouch to carry and nurse their young. The pouch opening is usually forward-facing and hard to see unless closely examined.
Behavioural Differences Between Male and Female Possums
Beyond physical features, male and female possums also behave differently — particularly when it comes to territory, nesting, and reproduction.
1. Territory and Aggression
Males are highly territorial and often solitary. They defend their space aggressively, using vocalisations, scent marking, and occasional physical confrontations. In contrast, females are more tolerant of sharing space, especially with their young or other females.
In urban environments, these behaviours influence roof nesting patterns. Males tend to occupy solitary nesting sites, while females may return to the same nest with their joeys.
2. Nesting Habits
Female possums are more consistent with nesting. During breeding seasons, they seek out warm, secure locations — often in tree hollows or roof cavities. Males, on the other hand, are more transient and may switch locations frequently depending on competition.
3. Parental Roles
Female possums raise the young alone. After birth, the joey stays in the pouch for several months, then rides on the mother’s back until it becomes independent. Males play no direct role in parenting.
For more on this topic, visit Possum Mating and Breeding Habits.
Male vs Female in Different Possum Species
Some species show more obvious sex-based differences than others. Here’s how the comparison plays out in Sydney’s two most common possums:
Brushtail Possums
- Males have a larger build and noticeable head scent gland
- More aggressive and territorial
- Females more likely to nest in roof cavities with joeys
Ringtail Possums
- Less sexual dimorphism — both sexes are similar in size
- Live in family groups — sometimes both sexes share the same nest
- Both parents may be seen together, though only the mother carries young
For more on these species, explore our full guides on the Brushtail Possum and Ringtail Possum.
Why Sex Differences Matter for Removal and Management
When removing possums from a roof or garden, knowing the sex is helpful — especially if a female may be nesting with young. It’s illegal to relocate a mother possum without her joey, so identification ensures legal and ethical removal.
Signs that a female may be present include:
- Smaller body size with cautious movements
- No visible forehead gland
- Repeated visits to the same nesting site
To learn more about the legal side of removal, visit Are All Possums Protected in NSW?.
Can You Identify Sex Just by Sounds?
Not reliably. Both sexes make grunting, hissing, and screeching sounds — though males may vocalise more during mating season. For help with sound recognition, visit Possum Sounds and Vocalisations.
Need Help Identifying or Removing a Possum?
If you’ve got a possum nesting in your roof or garden, our licensed team can help identify its sex, determine if a joey is present, and relocate the animal in line with NSW wildlife protection laws.
Book a possum inspection today or call 0468 166 733 for expert possum management in Sydney.
