Fauna
Mammal

Big-eared Opossum

Didelphis aurita

Also known as Saruê, Gambá

Big-eared opossums are highly adaptable marsupials that thrive in both the dense canopy of the Atlantic Forest and bustling urban neighborhoods. These nocturnal foragers use their prehensile tails and opposable thumbs to navigate branches and fences with remarkable agility. When threatened, they hiss loudly and bare their fifty sharp teeth, though they prefer to slip away quietly into the night.

NocturnalMarsupialAdaptable
Big-eared Opossum reference
Christian Roger Dockhorn / Public domain · cc0
—observations
—countries
—peak records
Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Key facts
Diet & preyInsects, Snakes, Wild Fruits
Predators
  • Ocelot
  • Harpy Eagle
  • Domestic Dog
ThreatsHabitat fragmentation, vehicular collisions, domestic dog attacks, and human persecution
HabitatsAtlantic Forest, urban areas, agricultural lands, and shrublands
Life span2 to 3 years
Classification
  1. FamilyDidelphidae
  2. SpeciesDidelphis aurita
Range & activity
Native
Safe observation
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
May hiss and bite if cornered; observe from a safe distance and do not corner.
Why it is dangerous
Capable of delivering a painful bite with its sharp teeth if cornered, handled, or threatened.
How to recognize a risky encounter
Look for a cat-sized marsupial with prominent, hairless black ears, a pointed snout, and a long, scaly prehensile tail.
What to do
Never attempt to touch or capture a wild opossum; back away slowly and allow it an escape route.
Responsible observation
  • Keep Distance: Give them space when encountered at night, as they are non-aggressive but will defend themselves if cornered.
  • Secure Trash: Keep outdoor garbage bins sealed to avoid attracting them to residential yards.
  • Leash Pets: Keep dogs on a leash during night walks in areas where these marsupials forage.
Related species
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