Gray-bellied Slender Mouse Opossum: Identification, Habitat, Behavior, and Control

The Gray-bellied Slender Mouse Opossum, scientifically known as Marmosops incanus, is a fascinating marsupial species found in specific regions. Here is some valuable information about this remarkable opossum.


The Gray-bellied Slender Mouse Opossum is a small-sized opossum, measuring approximately 4 to 5 inches in length, with a tail length of around 6 to 7 inches. They have a slender body, long snout, and large eyes. The fur coloration varies, but they typically have grayish-brown fur on their dorsal side and a lighter gray or white belly. Their prehensile tail helps them navigate through their arboreal habitat.

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Gray-bellied Slender Mouse Opossums are primarily nocturnal creatures, exhibiting peak activity during the night. They are adept climbers and spend a significant amount of time in trees, where they forage for food and seek shelter. These opossums are omnivorous, consuming a diet that includes insects, fruits, nectar, and small vertebrates. They are solitary animals and use scent marking to communicate and establish territories.

How to Control Gray-Bellied Slender Mouse Opossum

  1. Identify the source of the problem: Determine why the Gray-bellied Slender Mouse Opossums are becoming a concern. Are they causing damage to property, invading your home, or affecting your garden or crops? Understanding the specific issues will help in developing an appropriate control strategy.
  2. Exclusion measures: Seal off any potential entry points to your property or structures. Inspect your home or buildings for gaps, cracks, or openings that Gray-bellied Slender Mouse Opossums could use to gain access. Use materials like wire mesh or metal flashing to block entry points and ensure a secure barrier.
  3. Habitat modification: Make your property less attractive to Gray-bellied Slender Mouse Opossums by removing potential food sources and shelter. Keep your surroundings clean and tidy, removing fallen fruits, nuts, or other food items that might attract them. Clear away brush piles, stacked firewood, and other hiding spots to discourage their presence.
  4. Repellents: Consider using natural repellents to deter Gray-bellied Slender Mouse Opossums. Options may include ammonia-soaked rags, predator urine, or commercial repellent products specifically designed for opossums. Apply these repellents near areas where opossum activity is observed, such as entry points or preferred foraging spots.
  5. Trapping: In cases where exclusion and repellents are not effective, trapping may be necessary. Consult local regulations and guidelines before using traps. Live traps designed for small mammals can be used to capture Gray-bellied Slender Mouse Opossums. Once trapped, release them in a suitable natural habitat away from your property.
  6. Professional assistance: If the presence of Gray-bellied Slender Mouse Opossums persists or if you are unsure about how to handle control measures, it is recommended to contact a licensed wildlife control professional. We provide expert advice and assistance tailored to your specific situation, ensuring a humane and effective approach to managing the issue.
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If you require professional assistance in managing opossums or have any concerns, please contact us at Arete Pest Control. Our knowledgeable team is equipped to provide expert advice and effective solutions tailored to your specific needs.